I mean, that's pretty much how the system is _supposed_ to work, right? You want a law passed, you convince one of your duly elected representative to propose the law, get it passed through both houses and signed by the president.

Now maybe actively attacking members of congress isn't the most forthright way of convincing them that a law against that specific attack is a good idea, but assuming you can do it legally (such that the only way any future such attacks could be prosecuted would be if a new law were created to make the attack illegal) it does seem like like a rather effective approach.