Trump himself on Tuesday tweeted that collusion was not a crime, adding that it didn't matter any way because there was no collusion between his campaign and Russian Federation, which intelligence agencies have concluded meddled in the 2016 election.
The President has repeatedly denied that there was any collusion between his campaign and Moscow, and he told The New York Times in December that "collusion is not a crime".
Mueller might decide, for example, that a crime was committed if he finds evidence that an American was involved in the hack of Democrats, either by soliciting it or paying someone to do it.
The meeting has become a central focus of special counsel Robert Mueller's investigation into whether anyone within Trump's campaign colluded with Russia's meddling in the last United States presidential election.
Asked if he thought that Trump would be subpoenaed and a constitutional fight would ensue, Giuliani said, "Well then there'd be a constitutional fight".
"When I said today that there was no collusion and that collusion also is no crime, I've been saying that from the very beginning", he said, reacting to new reports that he was attempting to change the narrative. He said about ten of them feature Cohen and reporters, while another one is a tape of Trump, Cohen and CNN anchor Chris Cuomo.
The comments from Giuliani, President Donald Trump's personal lawyer, are a far cry from the dozens of tweets, statements and outbursts Trump has made for more than a year and a half in which he has vehemently denied colluding with the Russians in their hacking scheme to influence the election. "'Collusion" and "coordination' are not legally relevant terms, but they are often used as shorthand to refer to such a criminal conspiracy", it said.
Giuliani added that the Russian Federation probe "has been continued as an illegitimate investigation". Trump wrote on Twitter.
"I'm not sure I know what exactly what the conflict is", Giuliani said.
Trump blasted Mueller for not releasing conflicts of interest stemming from what he called "a very nasty & contentious business relationship", and noted that he had previously turned him down to head the Federal Bureau of Investigation.