We now know that the response that the President's son gave to the Russians was, that he would love it if they would provide damaging information about Hilary Clinton. Rather than report of this overture by the Russian Government to provide damaging information to intervene in the presidential election in a way to help his father.
Neither the President's son, nor the campaign reported this information to the FBI. When it became obvious that the emails were being dumped, when it became obvious this was being done by the Russian government, when our own intelligence community issue a statement in October affirming that this was being done by the Russians, did the Trump campaign then disclose that, in fact, they had received an overture to receive damaging information.
The answer, of course, is no, they didn't. So this is obviously very significant, deeply disturbing, new public information about direct contacts between the Russian government and its intermediaries, and the very center of the Trump family, campaign, and organization.