Yup this thread is going about as expected.

Yes, the United States lost, they didn't achieve their objectives. Ignoring that would be to try and revise history.

But they didn't lose in a traditional sense. They lost in a sense that it was impossible for them to win given the circumstances. They couldn't invade the north without risking nuclear war. As such there was no way of "winning" in the first place. It wasn't a war about territory. The north couldn't invade the south because they were completely outmatched by the United States military and for political reasons the US couldn't march on Hanoi.

Add on gorilla tactics and heaps of despicable war crimes by both sides and you've got a horrible military quagmire that we were idiots for starting in the first place. The real "loss" was starting an unwinnable battle in the first place.