More green groups join effort to change Senate rules

“Whereas Senators once resorted to filibustering only in rare and exceptional instances of intense opposition, rampant obstruction has now transformed standard operating procedure. Today, majority rule in the Senate is the exception, not the rule,” said the letter to Senate Majority Leader Harry ReidHarry ReidIf Gorsuch pick leads to 'crisis,' Dems should look in mirror first Senate confirms Mulvaney to be Trump’s budget chief Democrats declare victory after Puzder bows out MORE (D-Nev.) and Sens. Dick DurbinDick Durbin McConnell: I’m very sympathetic to 'Dreamers' Senate Dems move to nix Trump's deportation order Dem senators call for independent Flynn probe MORE (D-Ill.) and Chuck SchumerCharles SchumerCEOs praise House GOP border tax proposal Overnight Cybersecurity: Trump defends Flynn, blasts leaks | Yahoo fears further breach Overnight Finance: Trump's Labor pick withdraws | Ryan tries to save tax plan | Trump pushes tax reform with retailers MORE (D-N.Y.).

Among the group's recommendations are ending the ability to filibuster motions to proceed, requiring senators who want to block bills and nominations to take the floor and allowing 41 senators to vote to continue debate.

“Requiring those wishing to slow down or halt legislation through the Senate rules to do so publicly on the Senate floor would raise the costs of obstruction so that the filibuster is reserved for instances in which a dedicated minority is intensely opposed to legislation,” the letter said.

— This story was updated at 1:37 p.m.