bargaining chip

That victory for the tab became a bargaining chip in all future dealings with the superstar.

“Energy is used as precisely this bargaining chip,” Brown concedes.

Barack Obama may have a new bargaining chip in negotiations over the debt limit.

Gun control advocates have told me the assault weapons ban was intended to be a bargaining chip.

Instead of seeing it as a bargaining chip, perhaps we should treat the GOP proposal as a serious governing document.