Instead of fighting it out all summer on the empirical question of the cost of amnesty, as they have been fighting it out on a dozen other issues, pro-amnesty Republicans should admit that their anti-amnesty colleagues raise a legitimate concern, and they should use the debate as an opportunity to strike a compromise: Amend the Gang of Eight bill to include means-testing, market-like competition, and block grants for Social Security, Medicare, and Medicaid, respectively, along with a gradual scaling-back to pre-recession levels for food stamps, unemployment benefits, and the like. Allay the Heritage crowd’s concerns by trading amnesty for significant entitlement reform.