Mueller's findings, as summarized Sunday by Attorney General William Barr, are unrelated to that "bigotry," Green said, vowing to keep up his fight to oust the president.

"#MuellersReport did NOT investigate bigotry emanating from the Presidency harming our country. The findings do NOT negate the President’s bigotry," Green tweeted Sunday evening. "As long as bigotry influences the President’s policies, I will continue to seek his impeachment."

He included a second hashtag: "#ImpeachmentIsNotDead."

Green's proposed articles of impeachment in the last Congress were a sweeping condemnation of the president's character, arguing that Trump is "unfit to defend the ideals that have made America great." As evidence, the articles cited Trump's ban on immigrants from predominantly Muslim countries, his prohibition on transgender people serving in the military and his equivocal response to the deadly white supremacist marches in Charlottesville, Va., in 2017, among a long list of other episodes.

Green has not introduced those articles this year but has said he intends to do so. He also has vowed to force the impeachment articles to the House floor for a vote, as he did twice in the last Congress. The second vote, in early 2018, attracted the support of more than 60 Democrats.

Following the release of Barr's letter summarizing Mueller's findings, Trump and his Republican allies quickly claimed victory, calling it a clear vindication for a president who has long characterized the probe as a "witch hunt."

"It was complete and total exoneration," Trump told reporters in Palm Beach, Fla.

The fight, however, is far from over. Democrats have been quick to point out that Barr's letter quoted Mueller as saying the investigation "does not exonerate" Trump from allegations that the president obstructed justice. They're calling for a release of the full report and its underlying documents to learn more about the meaning of Mueller's cryptic determination.

Democrats are skeptical, noting that Barr is Trump's hand-picked choice for attorney general and casting doubts on Barr's credibility as a neutral arbiter.

Outside groups agitating for Trump's impeachment are also pressing for the release of the full Mueller report.

Tom Steyer, the billionaire environmentalist who's traveling the country on an impeachment tour, said Congress should not be satisfied with "a 4-page summary written by a Trump appointee."

"Mueller concluded that he could not exonerate Trump," Steyer said Sunday in a statement, "and the American people deserve to know why."