Most of these are riders on the appropriations bills because the congressperson in question knows there's no other way to get their pet ideology past the house.

Most of these are riders on the appropriations bills because the congressperson in question knows there's no other way to get their pet ideology past the house. For example if this ban were just a bill it probably wouldn't make it past the committee. But by attaching it as a rider to the appropriations bill they make sure that anyone voting against the rider looks like they're voting against funding the federal government.