Sen. John McCain warned his Republican colleagues that blocking President Barack Obama's nominees could come back to haunt them if the GOP takes control of the Senate and the White House next year.
"There is rising unrest within the GOP caucus over Minority Leader Mitch McConnell's [R-Ky.] strategy of blanket obstructionism," the aide said.
A senior Republican leadership aide, however, dismissed concerns about obstructionism and discounted McCain's warning.
"Democrats filibustered judicial nominees, blocked Cabinet secretaries throughout the Bush administration — and kept the Senate in pro-forma the last year of his term specifically to prevent appointments," the aide said. "They've never needed precedent to block Republican nominees."