The Supreme Court rejected an activist’s effort to trademark the phrase “Trump Too Small” on Thursday, finding that the federal trademark office didn’t violate the activist’s First Amendment rights when it declined to register the slogan.

Justice Clarence Thomas delivered the unanimous decision from the Supreme Court on Thursday. The dispute stemmed from plaintiff and t-shirt designer Steve Elster’s plan to mock former President Donald Trump based on taunts between Trump and Sen. Marco Rubio (R-FL) during the 2016 election, who were rivals at the time for the Republican presidential nomination.

Rubio was growing weary of Trump’s taunts calling him “Little Marco,” so he pointed out the size of Trump’s hands during a March 2016 campaign stop. “You know what they say about men with small hands,” Rubio told a crowd in Salem, Virginia. “You can’t trust ’em.”