Sen. John Cornyn (R-Texas) on Sunday accused President Obama of failing to take a leadership role in ongoing negotiations about the debt ceiling and said it would be "irresponsible" to force Congress to vote on a last-minute debt deal.

Cornyn said on Fox News Sunday that Obama hasn't outlined a firm proposal for spending cuts to accompany an increase in the debt ceiling. The Treasury Department says Congress must raise the limit by Aug. 2.