Non-legislative powers of committees: bureaucratic oversight, committees authorize the budget of bureaucracies, congressional investigations, committees hold hearings to investigate actions of the executive (i. e. investigations on benghazi and hillary. It is commonly used to set the debate rules in the. Senate (usually for noncontroversial bills: filibuster: dilatory motion to delay or defeat legislation (i. e. rand paul"s filibuster of the confirmation of cia director over drone policy, filibuster can only be stopped by a cloture vote, which requires. Case study health care reform in 2010: november 2008: obama campaigns on health care reform, november 7 2009: house passes a health care bill (house version) Partisan polarization in congress: increasing partisan polarization since the 1960s, democrats are becoming more liberal, republicans are becoming more conservative, moderate democrats and republicans are disappearing. Causes of partisan polarization: the civil rights movement and legislation in the 1960s (and the following southern realignment, conservative democrats left the democratic party and joined the.