Rules that permit a president to veto an appropriation bill only in its entirety, or that require each amendment to be voted before the original act is voted on, or a priority system accorded to different kinds of motions, substantially alter the incentives that are brought to bear on each action. One who might be pressured into choosing second best is relieved of his vulnerability if he can vote earlier to eliminate that possibility, thereby leaving only first and third choices about which his preference is known to be so strong that no threat will be made.

XREF: Connects to public choice theory and constitutional design literature, where institutional rules are seen as shaping strategic behavior.

Thomas C. Schelling, The Strategy of Conflict, loc. 91