This is probably the normal case, but a political savvy advisor to Trump should talk him into ordering witness interviews.  None of the witness can change their statements, and their lawyers probably wouldn't let them.  This will force Democrats to obstruct purely on politics, since all an FBI investigation would result in are form 302s which would be turned right back in to the senate.  Thats why this is such BS, Democrats are hoping Mark Judge perjures himself which is stupid since hes not going to admit to crimes, not with a lawyer present, and you know all of their friends already know you dont talk to the cops without a lawyer present.  Even if he did, 2 other people will say and have said that no such get together took place.    I am all about returning to Federalism as described in the Federalist papers.  Repeal the 17th.  This is what screws us.  Senators should be agents for states  not the peoples and wouldn't have passed Obamacare because it screwed so many states.  What we have now are 2 chambers of representatives.  The 17th is the what has crippled this country.