If said bills are so well-known and all over the news, why not just link to one? This is HackerNews, if someone says "____ exists and it's a problem" and someone else politely asks "which ____ are you referring to?", the appropriate thing to do is to just reference the thing in question - we don't need to get pedantic about the range of one's media consumption.
It's because the bills in question don't actually explicitly restrict people of color from voting, they just make voting a little less convenient (i.e. a bill that you have to show a photo id to vote, for example, and a person of color might be statistically less likely to have a photo id than a non-person of color)
The reason I (and I assume other commenters, but I don't presume to speak on their behalf) don't care to dig up sources for you is because it's a waste of time. There are only two possibilities: either you're in denial, in which case there's nothing I can present to you that you won't also be in denial about; or you're not, in which case you can just search for it yourself (e.g. “bills that restrict voter rights in America”). Things that are all over the news are also generally easy to find.