trigger point mechanism

基本解释

Properly configured, the cuts could be made without biting into benefits for the elderly who depend upon the program, but the trigger mechanism does not point to specific areas of the federal health program where the cuts could be targeted in a way that would reduce spending while protecting benefits.
FORBES: What Does Super-Committee Failure Mean For Healthcare?
The whole point of the Budget Control Act was to create a trigger, a forcing mechanism that was so onerous that nobody wanted it to come to pass.
WHITEHOUSE: Press Briefing