News of the meeting involving the younger Mr. Trump, Mr. Kushner and Mr. Manafort blunted whatever good feeling the president’s team had after his trip to Europe for the Group of 20 economic summit meeting.
The president learned from his aides about the 2016 meeting at the end of the trip, according to a White House official. But some people in the White House had known for several days that it had occurred, because Mr. Kushner had revised his foreign contact disclosure document to include it.
The president was frustrated by the news of the meeting, according to a person close to him — less over the fact that it had happened, and more because it was yet another story about Russia that had swamped the news cycle.
https://www.nytimes.com/2017/07/10/us/politics/donald-trump-jr-russia-email-candidacy.html
Drip. Drip. Drip.
If this is his reaction to this meeting becoming public i wouldn't be surprised if even more damaging meetings were had. I mean this isn't just "another story" but rather its concrete proof that the Trump campaign was in contact with Russian officials (if you think they are just a "private citizen acting on their own accord" you are dumb) seeking dirt on Clinton.