As Yogthos said, do read the the actual resolutions before commenting. The US "resolution" did not demand preventing an invasion of Rafah like the other resolutions had, nor did it explicitly demand a ceasefire like, again, the other resolutions had. It only really demanded the hostages back.
Veto'ing it for "political" reasons like you claim would've been the dumbest thing a state could do seeing how western news outlets have excitedly been using it to portray China and Russia in a bad light. Judging by this thread alone, that seems to have successfully fooled at least 1 person.
B-but what about... checks notes... Hong Kong's unique identity of overpriced goods and services 😢