President Obama “never did a deal in his life except with Tony Rezko,” said Donald Trump on Fox News.

“People should look into that one,” he added.

Trump once again went on the offensive against Obama. His previous point of attack was doubts over Obama’s birthplace. Now, it’s the latter’s long history with Tony Rezko, who Hillary Clinton in 2008 called a “slum landlord.”

Rezko is am Illinoisan political fundraiser who was convicted for fraud and bribery in 2008. He was accused of using his political position to extort money from businesses seeking contracts from the Illinois Teachers System Board and the Illinois Health Facilities Planning Board.

Back in the 1990s (before Rezko’s offenses took place), two companies owned by Rezko gave the first ever contributions to Obama's Illinois Senate campaign. In the 2000s, he served on Obama’s U.S. Senate campaign finance committee.

In 2005, Rezko’s wife bought a lot adjacent to a house Obama purchased for $625,000 and subsequently sold a part of it to Obama. The deal generated much controversy back in Obama’s 2008 presidential campaign.

Trump went on to say that the President of the United States needs to be able to “deal properly” – something he said Obama isn’t able to do because the latter “never did a deal in his life except with Tony Rezko” before assuming the presidential office in January 2009.

Trump criticized America’s “deal” with China, which will have the latter making a “$300 billion profit” this year. In prior interviews, Trump also criticized America’s deal OPEC and blamed it for high oil prices.