Congress passed a surprising number of bills between 1981 and 2008 with bipartisan majorities large enough to withstand a presidential veto despite growing ideological divisions between Democratic and Republican lawmakers. A new Dartmouth – Miami University study demonstrates that legislative leaders used their increased control over procedures, a development that coincided with greater polarization, to create veto-proof bills. Presidents, in turn, gleaned useful information from such lopsided tallies to deploy their veto power strategically. The findings are published in Political Research Quarterly in an OnlineFirst manuscript ahead of the June print issue.