Immigration is one of the most salient and important issues in contemporary American politics. While a great deal is known about how cultural attitudes and economics influence public opinion toward immigration, little is known about how attitudes toward government influence support for immigration. Using cross-sectional data from the American National Election Studies (ANES), panel data from the ANES and General Social Survey, as well a Mechanical Turk (MTurk) survey experiment, I show that political trust exerts a positive and substantively meaningful influence on Americans' support for immigration. Politically trustful individuals, both Democrats and Republicans, are more supportive of pro-immigration policies. These findings underscore the political relevance of trust in government and show that public attitudes toward immigration are not driven solely by feelings about immigrant groups, partisanship, core political values, nor personality traits, but are also affected by trust in government, the actor most responsible for managing immigration policy.