For the record, I'm a gun owner and am pretty pro-gun.
Here's the difference here in America:
-Gun control is mostly considered a "state issue", i.e. each state decides what kind of gun restrictions they want.
-The gun lobby (mainly the NRA) vehemently rejects ANY reasonable gun restrictions at the federal level by using the 2nd Amendment as a lucky rabbit's foot (which if you actually study the reasoning behind the 2nd Amendment, it doesn't protect gun rights of private citizens at all).
-They do this by stoking people's fears of the government marching in and taking everyone's guns, and even the lightest gun restriction is unquestionably a stepping stone on that path ("first they ban bump stocks, then they'll start requiring background checks for private transactions, then they'll ban your AR-15! And by that time, they'll have all your private info!!!" :infocrazy: )
-The gun lobby also focuses their efforts extensively on state gun restrictions, to make sure there's no national consensus on what gun restrictions there should be.