Retired Dr. Ben Carson told The Wall Street Journal on Thursday that he doesn’t want to be the running mate on the ticket with Donald Trump, the GOP’s presumptive nominee—but that Democrats could be under consideration for the vice presidential slot.

The newspaper reported that Carson suggested that a Democrat could be considered for the role and that he doesn’t want any part of it.

“I’m not interested in doing that for a number of reasons,” Carson told the publication. “I don’t want to be a distraction. I’m sure you remember how crazy the media was about me, I don’t want to be a distraction, it’s too important a time in our life.”

Trump told The New York Times that Carson and “some other folks” would help him select his running mate, but that he wouldn’t select someone until July.

“We would consider people who are Americans and who put America first,” Carson told the Journal.

Carson endorsed Trump in March after failing his own bid for the White House and has at times struggled to defend his support of Trump and articulate his policies.