Trump is certain to face a barrage of questions unrelated to their meeting, after reports this week that the White House was aware former national security adviser Michael Flynn was under investigation before the president's inauguration, that Mr. Trump possibly revealed classified information to Russian diplomats, and that fired FBI Director James Comey said in a memo that Mr. Trump asked him to drop the FBI investigation into Flynn.
"When the president abruptly fired FBI Director James Comey, the timing was 'troubling, ' multiple Republican lawmakers agreed", the report said.
The campaign on Thursday said that it generated US$314,000 online, mostly through small donations.
Mr. Trump called his meeting with Santos "productive", as he said future meetings will be.
Asked point-blank if he'd done anything that might merit prosecution or even impeachment, Trump said no - and then added of the lingering allegations and questions: "I think it's totally ridiculous". He went on to sharply criticize the investigation into his campaign's possible collusion with Russian officials to influence the usa election.
Trump's Twitter comments stood in contrast to his measured statement on Wednesday night after former FBI chief Robert Mueller was named as special counsel, in which he said "a thorough investigation will confirm what we already know - there was no collusion between my campaign and any foreign entity".
On the subject of the allegations - started in July 2016 by the Hillary Clinton campaign and embraced by Democrats and some of the media since her surprise defeat in November - that he and his campaign colluded with Russia, Trump said that "the entire thing has been a witch hunt". "He is a dedicated, well-respected public servant who puts the best interests of our country over party politics and works hard to be a strong voice for justice", said Democratic Harris County Commissioner Rodney Ellis, who was a state senator.
The news that Trump wants to bring Flynn back to the White House isn't shocking, at least relative to what we've come to expect from Trump.
One striking piece of news emerged from Rosenstein's briefing: He told senators that he had already known Comey was getting fired even as he wrote the memo that Trump cited as a significant justification for the Federal Bureau of Investigation director's dismissal.
The White House vigorously denied it all. Trump himself had already contradicted that explanation, telling interviewers earlier that he had already chose to dismiss Comey.
Mr Trump on Thursday piled onto his mounting reasons for firing Mr Comey, mentioning his "very poor performance" at a recent Senate hearing, and the FBI's declining reputation. "Because you look at all of the people on the Democratic side, not only the Republican side, that were saying such awful things about director Comey", he said.