Trump has gone through one of the rockiest stretches of his presidency since the disclosure of the meeting in June 2016 between his son and the Kremlin-linked lawyer.
"This is about as clear of evidence you could find of intent by the campaign to collude with the Russians, to get useful information from the Russians", Rep. Adam Schiff, D-Calif., said of Trump Jr.'s emails.
The meeting took place at a pivotal point in the 2016 campaign, after Mr Trump had shocked Republicans with a string of primary victories and Ms Clinton had all-but secured the Democratic nomination.
"The latest "I can't believe this actually happened" bombshell concerns, of course, not Trump himself but his namesake, Donald, Jr., whose emails confirming Russian support for his father and meddling in the election present such low hanging evidentiary fruit that even Jeffrey Beauregard Sessions III could pick them", Takei wrote, needling Attorney General Jeff Sessions.
While Mr. Trump Jr. has confirmed that Russian attorney Natalia Veselnitskaya was in the meeting, he did not disclose Mr. Akhmetshin's presence.
In a statement to the Times, Mr Trump Jr said she "stated that she had information that individuals connected to Russian Federation were funding the Democratic National Committee and supporting Mrs Clinton".
The number of people known to have been at the meeting also changed over time.
The emails - which the younger Trump published on Twitter, pre-empting their release by The New York Times - were released as the White House contends that investigations of possible campaign collusion with Russian Federation are nothing more than a "witch hunt". Schiff is the senior Democrat on the House Intelligence Committee. He emerged to say that he had witnessed no collusion between the campaign and Russian Federation.
The Washington Post-ABC News poll said the president's overall approval rating was 36 percent, down from 42 percent in April. "We can't be aware of all the meetings Russian lawyers have overseas", said spokesman Dmitry Peskov. "The ABC/Washington Post Poll. was just about the most inaccurate poll around election time!" he tweeted.