During her tenure in the House of Representatives, Gillibrand was known as a centrist Democrat. While serving in the House, Gillibrand was a member of the Blue Dog Coalition, a caucus of fiscally conservative Democrats. During her House tenure, Gillibrand voted against the Emergency Economic Stabilization Act of 2008, spoke against the issuance of driver's licenses to undocumented immigrants and voted for a bill that would withhold federal funds from immigrant sanctuary cities. Gillibrand also voted for a bill that limited information-sharing between federal agencies about firearm purchasers and advocated for civil unions for same-sex couples.