Most theories of how to control bureaucracies are derived from American experience and are tested with data from the U.S. In contrast, this article uses evidence from the 15 members of the European Union to examine oversight mechanisms through which legislators attempt to control the bureaucracy. Analysis of European data shows that "police patrol" mechanisms of oversight appear in countries with relatively little gridlock as measured by the ideological range of their governments. "Deck stacking" mechanisms appear in countries that experience greater problems with gridlock measured in the same way.