In a series of Twitter posts, President Trump attacked Hillary Clinton, saying Republicans were now pushing back against the Russia allegations by looking into her.
The lawyer, Ty Cobb, said on “The New Washington” podcast that the White House staff is cooperating with an eye toward a swift end to the investigation.
The information that a Russian lawyer brought to a June 2016 meeting with Trump campaign aides had been discussed with a top Russian government official.
The Washington Free Beacon, a website funded by a major G.O.P. donor, initially retained the firm that later conducted opposition research for Democrats.
House Republicans are planning to release their tax bill next week, and the budget measure will allow the overhaul to pass Congress without any Democratic votes.
President Trump has vocal critics, but the Republican Party is increasingly his own, with little room left for an older breed of internationalist conservative.