Consumers all but shut their wallets in the second quarter, causing the U.S. economy to grow at a tepid pace.

To make matters worse, growth in the first quarter was much slower than initially thought, according to new government figures released Friday.

"It's quite worrisome as the economy remains at stall speed in the second quarter," said Sal Guatieri, senior economist with BMO Capital Markets. "If that continues, then it would raise the risks of a double dip."

Gross domestic product, the broadest measure of the nation's economic health, rose at an annual rate of 1.3% in the second quarter, the Commerce Department said.

While that's an increase from the revised 0.4% growth rate in the first three months of the year, it is hardly good news. The government originally reported that the economy grew at a 1.9% annualized rate in the first quarter.

The growth in the second quarter was also below the 1.8% increase expected by economists surveyed by CNNMoney.

Dubbed a "soft patch" by economists and even Federal Reserve Chairman Ben Bernanke, the economy's sluggishness was due to a variety of factors that weighed on consumers and businesses.

Higher gas prices for one, hit Americans hard when they peaked at a national average of $3.98 a gallon in May.

Top 10 consumer complaints

Overall, consumer spending, which accounts for roughly 70% of gross domestic product, picked up only 0.1% in the second quarter -- marking a significant slowdown from growth of 2.1% in the first three months of the year.

"The major disappointment in the report was the weakness in consumer spending, and it wasn't just fewer automobiles being sold due to Japan's earthquake. There was broad-based softness in consumer spending." Guatieri said.

It marked the slowest growth in consumer spending since the fourth quarter of 2009.

Looking back further, it also now appears that American consumers had less disposable income than originally thought from 2007 through 2010, whereas corporate profits were revised significantly higher for 2009 and 2010.

The government revised the GDP data back to 2003 and also found the recession was worse than originally thought.

Overall, the theme of the U.S. recovery continues to be one driven by companies holding cash on the sidelines and building up their infrastructure, rather than a recovery driven by consumers.

Americans on Main Street continue to be held back by slow job growth and the housing slump, even as major companies report strong profits and have mostly solid balance sheets.

Where the jobs are

According to the latest GDP report, investment in commercial real estate surged 8.1% in the

second quarter, and business spending on equipment and software rose 5.7%.

Meanwhile, exports rose 6%. The U.S. continues to import far more goods and services than it exports to foreign countries, but because imports grew at a slower rate of 1.3%, that also contributed positively to GDP.

The aftermath of Japan's earthquake and tsunami may have been one of the major reasons import growth slowed, as the U.S. bought fewer auto parts from the country.

Friday's GDP report also sparked cries from economists for lawmakers to act quickly in raising the debt ceiling and agree to a deal to cut the national deficit over the long term.

"We don't expect a recession, but if policymakers drag their feet -- which they are doing -- it will be a little more likely," said Paul Dales, senior U.S. Economist for Capital Economics.

Guatieri said: "If the government does not raise the debt ceiling and is forced to cut back spending and Social Security checks, that could undermine consumer spending even further."

That's the $14.3 trillion question as each day ticks closer to next week's debt ceiling deadline and Congress shows no sign of brokering a deal.

If lawmakers fail to raise the ceiling by Tuesday, the Treasury Department has said it will no longer be able to guarantee that it can pay all the country's bills in full and on time.

That's because Treasury will not be taking in enough revenue to cover all the bills coming due in August. And without a debt ceiling increase, it will be prohibited from borrowing new money in the bond market to make up the difference.

So, something will have to give.

The consensus thinking has been that Treasury will prioritize who to pay first and who to put off. And at the top of the list of who gets paid will be investors owed interest on U.S. debt. If the investors aren't paid, that would constitute a default, which would have a host of negative consequences for the country.

Of course, it's possible Treasury may decide it doesn't actually have the authority to prioritize and will instead pay interest owed to bond investors but pay other bills as they come due -- first come, first served, said former Treasury official Jay Powell, who coauthored a Bipartisan Policy Center report on the consequences of not raising the debt ceiling.

Assuming, however, that Treasury believes it has the authority to prioritize, it's not clear yet who will be paid first alongside investors. The Treasury has said it will provide more information as Tuesday approaches, and Republican Sen. Orrin Hatch has requested that the department turn over its plan by 5 p.m. on Thursday.

The plan, however, isn't likely to make anyone feel better.

Will I get my Social Security check?

That's because everyone to whom money is owed besides bond investors have either qualified for federal benefits, provided goods or services to the government, are serving in the military or otherwise work for Uncle Sam. Money will also be due to agencies to which Congress has legally appropriated money to run federal programs.

On deck to be paid every month: retirees, veterans, business owners, federal workers, active-duty soldiers, Medicare physicians and government agencies that need money to keep the lights on, to name just a few.

"While at midnight on August 2nd we don't all turn into pumpkins," White House spokesman Jay Carney said in a press briefing, he described the process of picking who to pay and who to put off as a "Sophie's choice."

How the math might work: The Bipartisan Policy Center estimates that Treasury will be short by about $134 billion for the month of August.

That cash deficit will build steadily throughout the month.

So, on Aug. 3, for instance, the center estimates that Treasury will take in $12 billion in revenue and have to pay out $32 billion, creating a $20 billion cash deficit. Among the biggest bills due that day: $23 billion for Social Security payments, $2.2 billion for Medicare and Medicaid payments, and $1.8 billion due to defense vendors.

On Aug. 4, the group estimates that the cash deficit will increase to $26 billion, with only $4 billion in revenue coming in, compared to $10 billion in bills, the largest of which would be for Medicaid and Medicare.

Come Aug. 5, the cash deficit grows another $5 billion to $31 billion.

By Aug. 15, the Bipartisan Policy Center estimates that the running cash deficit will hit $74
billion. That day the Treasury will take in an estimated $22 billion in revenue and have to pay out roughly $41 billion. The biggest bill that day is a $30 billion interest payment.

Cash on hand: What's not yet clear is how much cash Treasury might have on hand going into August.

The Bipartisan Policy Center estimates it might have enough, in theory, to pay bills in full until Aug. 10.

Even if that's right, however, Treasury may still decide to withhold some payments sooner to preserve cash to ensure it can make interest payments after Aug. 10.

It may also keep some cash on hand to ensure it can make principal payments on bonds coming due after Aug. 10.

Treasury will be able to hold bond auctions to roll over existing debt as it matures -- more than $450 billion is expected to come due in August.

However, if there isn't enough demand for Treasuries because of the uncertainty the political crisis in Washington has caused, those auctions may fail to raise all that Treasury needs to pay the principal due.

So Uncle Sam would have to pony up using the revenue coming in. That would mean even less money available to pay seniors, vets, small business owners and others who are part of the lifeblood of the U.S. economy.

A bipartisan group of U.S. senators on Tuesday revived an ambitious budget plan that could provide new ideas for breaking the impasse in Congress over raising the nation's credit limit by August 2.

President Barack Obama threw his support behind the proposal by the "Gang of Six" senators, saying it was broadly consistent with his approach on reducing debt and deficits.

Obama urged Senate Majority Leader Harry Reid, a fellow Democrat, and Senate Republican leader Mitch McConnell to start "talking turkey" about it.

Senate Budget Committee Chairman Kent Conrad, one of the six Democratic and Republican senators who have been working since December on a deficit-reduction plan, said the proposed $3.75 trillion in savings over 10 years contains $1.2 trillion in new revenues.

The group briefed about half of the 100-member Senate and "the response was very favorable," Conrad told reporters.

He said the group asked fellow senators to take 24 hours to look at the proposal and "report back to us."

According to an executive summary of the plan, it would immediately impose $500 billion in deficit cuts, cut security and non-security spending over 10 years with spending caps, make the Medicare and Medicaid healthcare programs operate more efficiently and abolish the Alternative Minimum Tax.

Asked whether the plan could become part of urgent negotiations that link deficit reduction to raising the U.S. government's borrowing authority by August 2, Conrad said: "Could the two get married? Could they get combined at some point? I'm sure that's possible."

But leaders must first find out whether the proposal has enough support in the Senate, he said.

But a senior Senate Democratic aide said, for now, "there are no discussions" on incorporating Gang of Six ideas into legislation to raise the debt limit beyond $14.3 trillion.

TAXES AT ISSUE

Conrad was quick to say that while there are $1.2 trillion in new revenues, the overall plan envisions a $1.5 trillion tax cut that would be achieved through broad tax reforms.

Most Republicans, especially Tea Party members in the House of Representatives, have vowed to block any revenue increases.

The Senate group's hope has been that if the three conservative Republican members embrace revenue increases, the idea could catch fire among other Republicans in the Senate and House -- especially if popular but expensive entitlement programs such as Medicare also shoulder some cuts.

In another politically risky move, the Gang of Six plan would achieve significant savings in healthcare programs, Conrad said. The specific spending cuts would be decided later by congressional committees.

Conrad said a separate measure would reform the Social Security retirement program to stabilize its finances for the next 75 years.

The effort got a boost as conservative Republican Senator Tom Coburn rejoined the group after taking a "sabbatical" in mid-May amid heavy disagreement over Medicare spending cuts. It was not yet clear how Coburn's concerns have since been addressed.

On Monday, Coburn unveiled his own plan to cut $9 trillion in deficits over a decade, including nearly $1 trillion in revenue increases.

Revenue proposals are not likely to include income tax rate increases. Instead, they could center on repealing or rolling back special tax favors such as those for ethanol blenders and companies that operate corporate jets, as well as preferential tax treatment for fund managers.

Those specific decisions likely would be up to House and Senate tax-writing committees, along with broader tax reform questions.