President Trump is reportedly planning to sign an executive order making English the official language of the United States.

While English is the most commonly used language in the country, the U.S. has never had an official language at the federal level. The president’s plan to sign the executive order was first reported by The Wall Street Journal.

Republican members of Congress have previously attempted to pass legislation declaring English the official language, and many states have already designated English as their official language.

During his campaign, Trump criticized the influx of other languages into the U.S., stating that some of these languages were unfamiliar to Americans.