Legislative Coalitions and Presidential Signing Statements

We examine how the congressional coalition in favor of a law affects the probability of the president appending a positive or negative signing statement to it. Our results show that coalitions matter—presidents consider the power and status of a law's sponsor and the composition of its cosponsorship coalition when deciding whether to offer praise or raise concerns. Moreover, the factors driving praise and criticism differ from one another in important ways. These analyses demonstrate the value of assessing the valence of a signing statement rather than just its presence, and of extending the focus of research on signing statements beyond aggregate factors to investigate how the context surrounding a particular law shapes the president's reaction to it.