That their local representative was anti-gun control before this shooting affected his own local area, only proves your point more. That he changed his opinion is a good thing, but too little too late.

Very impressed that he publicly came out to accept responsibility for the Maine shooting with his previous opposition to gun control though, and is now advocating for it.

Unfortunately, it may take several shootings in all the representatives' and senators' home towns that are in opposition to actually flip them (even then, it wouldn't change many of their minds, unless it actually personally affected them), and the country shouldn't have to suffer that. It likely will literally take a constitutional amendment to prevent the supreme court from overturning any legislation enacted (or at least stripping it down to become fluff legislation with little meaning, or effect).