The president's trip to Minnesota is also significant given that he lost the state, which is a traditional Democratic stronghold, by just two points in 2016.
The business owners were on hand to talk about how the tax cuts have benefitted their companies.
Trump has refused to make his tax returns public.
President Donald Trump is spending America's tax filing day in Minnesota.
Minnesota, which gave the country Vice Presidents Hubert Humphrey and Walter Mondale, both Democrats, hasn't given its 10 electoral votes to a Republican since Richard Nixon in 1972.
Along with Klobuchar were Minneapolis Mayor Jacob Frey, St. Paul Mayor Melvin Carter and State Auditor Julie Blaha. U.S. Treasurer Jovita Carranza also was on board Air Force One, according to the White House.
The tax cuts were lambasted on Sunday by Minnesota Sen.
"That tax bill was a major missed opportunity", she said.
"The tax bill that he passed that he is here to celebrate tomorrow doesn't invest in things like infrastructure". "The truth is, Donald Trump is a rich businessman using the presidency and his tax bill to make money for himself and his rich friends". An NBC/Wall Street Journal poll last week showed that most Americans didn't think they even got a tax cut.
More evidence came from a report by tax preparer H&R Block on Thursday that said Americans were undergoing a "confusing tax experience" this season. He claimed that 80 percent of Americans received a tax break this year, whether they noticed or not. The total number of people receiving refunds is down just under 2 percent; with the average refund down slightly more than 1 percent, from $2,864 to 2,833 this year.
Federal data also showed a negligible increase in refunds.