Barack Obama announced that he will help pay off Hillary Rodham Clinton's more than $20 million debt, personally writing a check in a gesture meant to win over her top financial backers.

Obama met with more than 200 of Clinton's biggest fundraisers on Thursday at Washington's Mayflower Hotel, the first step in a two-day push to bring her supporters onboard his general election campaign. Behind the scenes, the two sides were negotiating her future involvement with the campaign.

Some Clinton donors had been frustrated that the Democratic presidential nominee-in-waiting had not done more to help her pay the bills even as they are expected to help fund his campaign.