Trump: Who's behind rallies seeking tax returns

President Donald Trump says "someone should look into who paid" for the rallies around the country Saturday that urged him to release his tax returns.
Trump tweeted Sunday: "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?"
Trump was the first major-party nominee in more than 40 years not to release his tax returns and he reneged on a campaign commitment to release them. He said they were being audited.
He tweeted Sunday: "Someone should look into who paid for the small organized rallies yesterday."
Thousands chanted and marched Saturday demanding the release of his returns so the public can examine his business ties and determine whether he has links to foreign powers. The demonstrations came just days before Tuesday's deadline for taxpayers to file their returns.
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