Depends on what you mean by "gun control laws"
Heck, I support some gun legislation, such as extensive background checks. I don't see anything but good there. I don't want some psycho, or some felon, being able to legally buy a gun of any type. I know they can get them on the black market, but at least checks make it more difficult. But I also don't have a problem with the vast majority of US citizens being able to purchase guns, assuming they pass the checks. I don't really understand why someone would want an AK-47 with a 30 clip magazine, but at the moment it's legal and I see no reason to change things.
And the Marathon bombing had nothing to do with guns until the guy shot the cop last night. I suppose one could ask why would a person here on an extended green card is allowed to own a gun legally ...perhaps he didn't. Maybe he got it on the black market.
I know he didn't go to Wal Mart and buy the grenades they were throwing out of the car last night.