Legislatures run mainly on norms and customs. As people have pointed out already, no legislature can bind a future version of itself (which is why the 60-vote filibuster is unconstitutional, but I digress).<p>Congress could establish better customs, of course. It is customary in many nations to limit legislation to a single topic and to codify the laws on a single topic in a single published Act. For example, virtually all of the important laws relating to, say, education, might be published in an Education Act, and from time to time, a legislature would enact a new version of it, replacing the old version entirely.<p>This tends to make reading up on the laws (and proposed laws) much easier, and it also makes super-specific tax breaks for individual companies and things like that really stand out.<p>The U.S. custom of publishing bills as a list of "replace "and" in line 76422 with "or"" statements is a really poor legislative custom.