Supporters of comprehensive immigration reform are optimistic, but the Senate Gang of Eight’s bill has a long way to go before it has any chance of becoming law. If the legislation makes it through the Senate, there’s no guarantee the House will take it up. A bipartisan group of eight House members are working on their own comprehensive bill, and House Judiciary Chairman Bob Goodlatte, R-Va., is introducing a series of single-issue immigration bills. “It gets complicated when you consider the number of permutations,” says Darrell West, a scholar at the Brookings Institution. National Journal Daily breaks down how an immigration overhaul may—or may not—become law.