Multiple states are suing the Trump administration to halt the implementation of President Donald Trump’s proposed tariffs.

They said Trump’s tariffs were unlawful and created chaos within the nation’s economic system, the Associated Press reported. The lawsuit was filed in New York City on Wednesday at the U.S. Court of International Trade. Twelve states were listed as plaintiffs in the lawsuit: Arizona, Colorado, Connecticut, Delaware, Illinois, Maine, Minnesota, Nevada, New Mexico, New York, Oregon, and Vermont.