Okay, so Trump's former campaign chairman and associate have been indicted on money laundering, tax and foreign lobbying charges. I think we can assume that since Robert Mueller chose them as his lead-off catches, he's pretty confident he's got a strong case there. The question is whether they have sufficient dirt on others that they can reduce the trouble they're in by testifying against those others.
But the bigger story today may turn out to be that in a separate matter, George Papadopolous admitted that in his capacity as a Trump adviser, he met with an unofficial representative of the Russian government to arrange meetings with Putin's office and the Russian Ministry of Foreign Affairs to get dirt on Hillary Clinton. That makes it a bit harder for Trump to claim this whole "colluding with Russia" story is "fake news."
I keep remembering that what did Nixon in was the slow drip-drip-drip of revelations that scared away prominent Republicans from defending him. Increasingly, G.O.P. members of the House and Senate became afraid of linking their careers to him because who the hell could guess what would be revealed next Tuesday? And at the time, Nixon was a lot more popular in this country than Trump is now.