Do US universities give conditional offer letters?

So I’m kinda confused—do US universities give conditional offer letters? Like, I know UK unis do that a lot, but what about the US? If yes, what does a conditional offer letter mean exactly? Does it mean I get the seat but have to meet some conditions later? Help me out, guys!

US universities usually don’t do conditional offers the way UK ones do. Most of the time, they just give you an admit or reject you. But sometimes, they might say, “You’re in, but you gotta do this first”—like taking extra courses or proving your English proficiency.