Now that the Senate's Gang of Eight has published its immigration proposal, TIME has put together four hurdles to the bill becoming law.
Problem #1: Stalling tactics from the right. Conservatives may stall the bill calling for "more hearings, more transparency, more opportunities to tweak the legislation to their liking."
Problem #2: Pushback from the left. Immigrants' rights groups feel the 13-year path to citizenship is too long and gay-rights advocates want greater protections for same-sex couples.
Problem #3: The cost for taxpayers. The cost of immigration reform has not been officially calculated. Conservatives are touting a large price tag as a reason to derail the legislation.
Problem #4: The conservative media storyline. Conservative media remains split between those who support immigration reform out of "sheer political imperative" and those who hope to divide the Gang of Eight.
For more in-depth explanations of each hurdle, click here.