Jon Greenberg is a staff writer with PolitiFact. He was part of the PolitiFact team during the 2012 presidential election and was one of the fact-checkers who launched PunditFact in 2013. Prior to that, he was executive editor at New Hampshire Public Radio and a Washington reporter for National Public Radio. He has twice won awards from the Society of Professional Journalists for investigative reporting.

The latest Truth-O-Meter items from Jon Greenberg


Not loved, but perhaps tolerated

Recent stories from Jon Greenberg

The facts on mass shootings in the United States

The murder of 26 people at a rural Texas church has raised questions about gun violence, access to weapons, the role of mental illness and the prevalence of mass shootings in America. Here's some research to help you sift through the debate.

John Kelly, the Civil War and the compromise that almost was

White House chief of staff John Kelly drew a firestorm of criticism when he said an inability to compromise led to the Civil War. We found an eleventh-hour attempt that would have preserved slavery forever. And Lincoln was OK with it.

Fact-checking Trump and his team on taxes

Our partners at E.W. Scripps spoke to the president and quite a few of his top people about taxes. We vetted their claims for accuracy.

Sinclair is targeting PolitiFact. But you need to know the facts

The Sinclair Broadcasting Group, the nation's largest owner of television stations, is attacking PolitiFact for a recent fact-check we published about federal funding related to superstorm Sandy.

Fact-checking the NRA's response to proposed gun laws after Las Vegas

We review the NRA's talking points (and one observation from Fox News host Chris Wallace) after the Las Vegas massacre.

The difference between automatic and semi-automatic weapons

There is no word yet on whether the Las Vegas mass shooter used an automatic rifle or some other weapon.

Fact-checking Donald Trump's tweets about Puerto Rico

We look into President Donald Trump's tweets about storm recovery in Puerto Rico.

Fact-checking Jimmy Kimmel's reaction to the Graham-Cassidy bill

The late-night show host said one of the bill's co-sponsors, Sen. Bill Cassidy, R-La., lied to him and the public about the protections he would build into a new health care law.

Fact-checking Hillary Clinton’s book 'What Happened'

From the health benefits of hot sauce to the scale of the Women's March, Hillary Clinton's new book is a trove of checkable claims. 

Fact-checking Trump’s tax speech in Missouri

President Donald Trump went to Missouri to relaunch his push for a major overhaul of America’s tax code.