The comments came after Trump boasted earlier in the day that the CEOs and business leader ditching his manufacturing council (including from Merck (mrk), Intel (intc), and Under Armour (uaa)) were simply grandstanding and could be easily replaced.
Controversy swirled after Trump's widely-criticized initial response to the white supremacist violence in Charlottesville, Va. over the weekend.
Richard Trumka, leader of the AFL-CIO, issued a statement on Tuesday saying "I can not sit on a council for a President that tolerates bigotry and domestic terrorism".
"I am appreciative of the opportunity to have served, but have made a decision to step down from the council".
Tesla chief executive Elon Musk and Walt Disney chief executive Robert Iger quit the Trump administration's strategic and policy forum in June after the President announced the USA would withdraw from the Paris climate accord.
Other executives, including those from General Electric and Dow, planned to stay on Trump panels, USA financial news media reported.
Late Monday, Under Armour CEO Kevin Plank and Intel CEO Brian Krzanich also announced they would quit the council. "However, Under Armour engages in innovation and sports, not politics", he stated.
Mr Trump mocked the executive nearly immediately following the resignation, saying on Twitter that Mr Frazier will now "have more time to LOWER RIPOFF DRUG PRICES!"
Merck CEO Kenneth Frazier, one of only four African-Americans leading a Fortune 500 company, was the first to tender his resignation Monday.
Just moments after that Trump tweet on Tuesday, Alliance for American Manufacturing CEO Scott Paul tweeted his resignation, saying it was "the right thing for me to do". We should honor-not attack-those who have stood up for equality and other cherished American values.
Two days later and after intense criticism, Trump on Monday called out the KKK, neo-Nazis and white supremacists as "evil" and "hate groups" that are "repugnant to everything we hold dear as Americans".
In addition to Krzanich's participation in Trump's advisory committee on manufacturing, he visited the White House earlier this year, and re-announced a factory development in the USA to boost Trump's favoribility.
"Earlier today, I called on all leaders to condemn the white supremacists and their ilk who marched and committed violence", Krzanich said in a statement. Like several other corporate leaders, Alex Gorsky, chairman and CEO of Johnson & Johnson, said that intolerance and racism have no place in United States society but that he meant to stay on the manufacturing council.
General Electric Co. Jeff Immelt will remain on the council while he is the chairman of the company. In addition to blaming "both sides" and mentioning the Alt-Left, Trump also argued that taking down Confederate statues is a slippery slope that could ensnare George Washington and other Founding Fathers. "GE has no tolerance for hate, bigotry or racism, and we strongly condemn the violent extremism in Charlottesville over the weekend", a company spokesperson said.
One other member, Dell, said there was "no change" in how it is "engaging with the Trump administration" on policy issues that affect the company.