May 27 (UPI) -- NPR sued the Trump administration Tuesday over an order to slash federal funding for the nonprofit public broadcaster, saying the order violated the First Amendment and the "express will of Congress."

The lawsuit filed in federal court in Washington was brought on by National Public Radio and three of its Colorado-based affiliated stations: Colorado Public Radio, Aspen Public Radio and KSUT Public Radio.

It "threatens the existence of (the) public radio system that millions of Americans across the country rely on," according to court documents.

They argued that U.S. President Donald Trump's May 1 executive order, which halted funding to NPR and the Public Broadcasting Service, violated the First Amendment and the 1967 Public Broadcasting Act, that Trump did not have the legal power to end federal funding and the directive should otherwise be blocked.

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