A legal advocacy group on Monday asked the US court of international trade to block Donald Trump’s sweeping tariffs on foreign trading partners, arguing that the president overstepped his authority.

The lawsuit was filed by the Liberty Justice Center, a legal advocacy group, on behalf of five US businesses that import goods from countries targeted by the tariffs.

“No one person should have the power to impose taxes that have such vast global economic consequences,” Jeffrey Schwab, Liberty Justice Center’s senior counsel, said in a statement. “The Constitution gives the power to set tax rates – including tariffs – to Congress, not the President.”

The Liberty Justice Center is the litigation arm of the Illinois Policy Institute, a free market thinktank. It was instrumental in the supreme court case Janus v AFSCME in which it successfully fought to weaken public labor unions collective bargaining power.

According to the group’s statement, the tariffs case was filed on behalf of five owner-operated businesses who have been severely harmed by the tariffs. The businesses include a New York-based company specializing in the importation and distribution of wines and spirits, an e-commerce business specializing in the production and sale of sportfishing tackle, a company that manufactures ABS pipe in the United States using imported ABS resin from South Korea and Taiwan, a small business based in Virginia that makes educational electronic kits and musical instruments, and a Vermont-based brand of women’s cycling apparel.

Representatives of the White House did not immediately respond to an email seeking comment.

The Trump administration faces a similar lawsuit in Florida federal court, where a small business owner has asked a judge to block tariffs imposed on China.