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Republican presidential candidate Mitt Romney has picked U.S. Rep. Paul Ryan, R-Wis., as his vice presidential candidate. Here's how Ryan has fared on the Truth-O-Meter.

Mitt Romney went first, attacking President Barack Obama over a welfare proposal. Then the White House fired back. In both cases, the results on the Truth-O-Meter were in the red.

Firearms became the focus of many New Jersey politicians following two mass shootings in Colorado and Wisconsin. Here’s a roundup of Truth-O-Meter rulings on gun-related statements.

"In the real world, an 8.8 percent reduction in after-tax income is a significant blow," said Daniel Mitchell, a senior fellow at the libertarian Cato Institute.

If you're watching the Olympics or just tuning in to your local news, the campaign ads can be relentless. We've put dozens of them to the Truth-O-Meter as part of our Message Machine partnership with NPR.

In a new campaign ad, President Obama says millionaires will "pay a little more" under his tax plan. We crunch the numbers to see how much that would be.

New ad from Democratic Congressional Campaign Committee targets Jon Runyan, other House GOP members; Sen. Frank Lautenberg compares deaths by gunfire in US to those on Middle Eastern battlefields

We assess President Obama's ongoing record in Iraq and Afghanistan

We look at a claim from a TV ad about Mitt Romney's tax plan.

Our check of a claim about increases in the federal debt under George W. Bush led us to a breakdown covering every president from Harry S Truman into Barack Obama's tenure.

Palin’s Texas visit boosting Cruz gave us a new claim for the Truth-O-Meter: Is one in seven U.S. families on food stamps?

We fact-check a claim from Americans for Tax Reform that Olympians are taxed 35 percent on their medals.