They want them to play within the legislative process.
Check it out:

The U.S. Chamber of Commerce says it will back “pro-business” candidates against Tea Party-styled opponents in this year’s elections, largely in response to conservative lawmakers fueling last year’s partial government shutdown fight.

“In 2014, the chamber will work to protect and expand a pro-business majority in the House and advance our position and our influence in the Senate,” Chamber President and CEO Tom Donohue said Wednesday. “We will support candidates who want to work within the legislative process.”

Donohue, in his annual State of American Business speech, didn’t single out the Tea Party specifically but said afterward the chamber’s frustrations are with the movement’s extreme faction and politicians who have linked themselves to the Tea Party.