Donald Trump responded to nationwide demands that he finally release his tax returns by turning the tables on his critics to ask who funded their demonstrations.
Thousands of people took to the streets across America on Saturday, including comedienne Sarah Silverman and Will and Grace actress Debra Messing.
They vented their anger at Mr Trump, who was the first nominee from the two main parties in 40 years to keep his tax returns private.
I did what was an almost an impossible thing to do for a Republican-easily won the Electoral College! Now Tax Returns are brought up again?— Donald J. Trump (@realDonaldTrump) 16 April 2017
Opponents wonder whether they might reveal secret financial ties to Russia or show evidence he is not as rich as he claims.
But rather than address protesters concerns, the president shrugged off the issue in a Sunday morning tweet.
“I did what was an almost an impossible thing to do for a Republican-easily won the Electoral College! Now Tax Returns are brought up again?
“Someone should look into who paid for the small organised rallies yesterday,” he wrote.
Organisers said marches took place in about 150 US cities on Saturday, while violent clashes with Trump supporters were reported in Berkeley, California.
The idea for the marches came from Jennifer Taub, a professor at Vermont Law School, who said she was inspired by the Women’s March in January, and quickly took off on social media after the comedian Frank Lesser posted the same idea.
Messing said protesters had legitimate questions.
Someone should look into who paid for the small organized rallies yesterday. The election is over!— Donald J. Trump (@realDonaldTrump) 16 April 2017
"We know for a fact our current administration has deep links to Russia,” she said.
"The only way we can know what kind of business ties our president has with businesses all over the world is by looking at his tax returns.
“I would just say: Mr Trump, if you have nothing to hide then please release them. Why not?
“If you release them and you're not hiding anything, the American people can feel rest assured that at least our democracy is protected.
“If you care about the American people, you will release your taxes.”
The rallies were organised to coincide with the time of year that Americans have to submit their annual tax returns
Police said 13 people were arrested following the violence in Berkeley.