Republican Speaker of the House Mike Johnson said he would push for legislation that would require voters to prove they are US citizens after meeting Donald Trump on Friday.
It was their first public meeting since Mr Johnson became speaker in November.
It comes as some members of Mr Johnson’s party are calling for him to be removed from his leadership post.
But the former president says he believes the speaker is doing a “very good job”.
House Republican Marjorie Taylor Greene filed a motion to remove Mr Johnson three weeks
Ms Greene accused the speaker of aligning with Democrats on the issue of Ukraine aid.
“We’re getting along very well with the speaker and I get along very well with Marjorie,” Mr Trump said after the meeting at his Mar-a-Lago residence in Florida.
“It’s not an easy situation for any speaker, I think he’s doing a very good job and he’s doing about as good as you’re going to do.”
Mr Trump began his remarks by attacking President Biden over the issue of immigration, which Mr Johnson linked to the declared subject of the meeting, “election integrity”.
Mr Trump has continued to attribute his 2020 presidential defeat to ballot fraud, but he has provided no evidence to substantiate his claims, which have been rejected by courts and elections officials from both parties.
