When Ryan referred to the caucus as the "CBC", Trump seemed confused as to whom Ryan was referring.
"Are they friends of yours?" he asked. "I do get good ratings, you have to admit that", and then sought out a reporter he thought might have a "nice question".
Mr. Cummings served as chairman of the Congressional Black Caucus from 2003 to 2005.
Late in a rollicking and unexpected news conference, Trump took a question from Ryan, who asked about his campaign promise to revitalize the American urban centers he frequently described in bleak terms.
"No, I'm just a reporter", replied Ryan, adding that she did know some members of the group.
Following the press conference, Ryan appeared on MSNBC to discuss Trump's comments. "He was probably told 'don't meet with Trump, it's bad politics, ' and that's part of the problem in this country".
Obamacare needs to be fixed, not repealed
In its place it put a government-designed health plan, administered by the insurance companies, that everyone is compelled to buy. If those penalties are reduced or eliminated, healthy people would have little incentive to buy insurance until they get sick .
House Oversight & Government Reform Committee ranking member Elijah Cummings (D-Md.) also strongly disputed Trump's claims that Cummings had canceled their meeting after Schumer told him to.
"I have no idea why President Trump would make up a story about me like he did today", Cummings said in a statement.
"Well, I would. I tell you what, do you want to set up the meeting?" You know, we called him and called him. "I was all set to have the meeting", the president claimed.
Ryan has already been in the news recently after she ended up in a confrontation with Trump communications official Omarosa Manigault. The White House press pool, and most certainly the women in the White House press pool, don't work for the president. She responded by telling the President that she's a reporter.
"We're the CBC. We sent you a letter on January 19, but you never wrote us back".
Cummings said he was actually looking forward to meeting with Trump to talk about the price of prescription drugs, which he had been collaborating with Sen.
'We are going to be working very hard on the inner cities having to do with education, having to do with crime, ' he pledged.