O'Donnell said on his MSNBC show The Last Word last night that an inside source had told him Russian oligarchs had co-signed on Trump’s loans with Deutsche Bank. Trump attorney Charles Harder respodned today with a threatening letter. These statements are false and defamatory, and extremely damaging. The only borrowers under these loans are Trump entities, and Mr. Trump is the only guarantor,” Harder's letter stated. “Demand is hereby made that Mr. O’Donnell and NBCU immediately and prominently retract, correct, and apologize." UPDATE: O'Donnell admits he was wrong: "Last night I made an error in judgment by reporting an item about the president’s finances that didn’t go through our rigorous verification and standards process," he tweeted. "I shouldn’t have reported it and I was wrong to discuss it on the air. I will address the issue on my show tonight."