The largest U.S. business lobbying group filed a lawsuit on Thursday challenging President Donald Trump’s $100,000 fee on new H-1B visas for highly skilled foreign workers.

The lawsuit by the U.S. Chamber of Commerce, which says it represents about 300,000 businesses, is the group’s first against the Trump administration since the Republican president took office for a second term in January.

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(Reporting by Daniel Wiessner in Albany, New York)