The House of Representatives voted 211-206 to make President Donald Trump's name change for the Gulf of America permanent on Friday morning.
No Democrats voted for the bill, as was expected. Rep. Don Bacon, R-Neb., was the only Republican to vote against the bill.
The legislation was led by Rep. Marjorie Taylor Greene, R-Ga., a vocal ally of Trump's in Congress.
"This is such an important thing to do for the American people. The American people deserve pride in their country, and they deserve pride in the waters that we own, that we protect with our military and our Coast Guard and all of the businesses that prosper along these waters," Greene said during debate on the bill.