What has been lacking so far is the “smoking gun.” Cohen may just supply it, if his purported testimony is credible and corroborated (admittedly big ifs). Indeed, Rudolph W. Giuliani, Trump’s lawyer, has https://www.washingtonpost.com/news/the-fix/wp/2018/07/30/rudy-giuliani-obliterates-the-goal-posts-on-trump-russia-collusion/?utm_term=.beeec61fb38b (gone from arguing) that Trump didn’t know about the Trump Tower meeting to arguing that the then-candidate wasn’t present (which no one has alleged he was) — and from arguing that no collusion occurred to arguing that collusion, even if it occurred, is no big deal. This is his actual defense: “My client didn't do it, and even if he did it, it’s not a crime.”