ALLEN: After spending the morning at his golf club, the president's motorcade took a circuitous route back to Mar-a-Lago, one that seemed aimed at avoiding protesters.
In New York, thousands also marched, and demonstrations were held from Boston and Philadelphia on the East Coast to Seattle, San Francisco and Los Angeles out West, and cities and towns in between.
Trump was the first presidential candidate in recent history not to release his tax returns. "The only way we're ever going to get government to act is keep them on their heels and show up", said Arik Bjorn. Organizations around the country made a decision to use this Tax Day and turn it into a nationwide Rally.
A resident at Cotton's town hall Monday said that Trump's tax returns would expose his overseas interests - a hint at the central role Trump's tax returns have taken in the continuing investigations into Russia's meddling with United States elections. He later said that voters don't care.
Because the traditional Tax Day for 2017 fell on a weekend, American citizens have until Tuesday, April 18 to file their tax returns this year.
Bloodied demonstrator is seen after a brawl broke out between conservatives and demonstrators in opposition to US President Donald Trump at a Patriots Day Free Speech Rally in Berkeley, California, US, on Saturday.
Trump says this is old news. Trump's break with precedent has raised questions about possible conflicts of interest.
Treasury doesn't name any countries as currency manipulators
US 100 dollar banknotes and Chinese 100 yuan banknotes are seen in this picture illustration in Beijing, China, January 21, 2016. The report comes one week after mostly positive talks between Trump and China President Xi Jinping.
The Trump tax marches were launched by a single tweet, organisers said.
"We are taking the gloves off to say knock off the secrecy Mr President", said Senator Ron Wyden of OR, the ranking Democrat on the Senate Finance Committee.
And in October, The New York Times reported that Trump had declared a $916 million loss on his 1995 federal tax return, citing three pages of documents from the return. "I hope Republicans see it".
The protesters on Saturday demanded Trump to release his taxes like his White House predecessors have done for more than 40 years.
And making the audits automatic may have been meant to bolster public confidence that the IRS will audit presidents of both parties and not let it become something the agency does at its discretion, according to tax lawyer Steven Rosenthal, a senior fellow at the Tax Policy Center.
Prominent Democrats such as House Minority Leader Nancy Pelosi (Calif.), who has been a vocal proponent of making Trump's tax returns public, believes the filings might help shed light on reported business and political interests the Trump organization is believed to have had in Russian Federation.