“This was something with the Iran deal, the fact that it didn’t get debated, it didn’t get voted on — there’s a lot of people that are very, very upset about this,” said Rep. Vern Buchanan (R-Fla.) in an interview on Tuesday, a day after he sent a letter asking McConnell to change the Senate’s rules. 

Buchanan said that he wants to see the upper chamber eliminate the filibuster entirely, though others are calling for a more modest step to get rid of the procedural holdup only in specific cases, such as with the Iran deal.

Rep. Steven Palazzo (R-Miss.) wrote a letter to McConnell last week calling for a change in rules for the Iran bill. Rep. Lamar Smith (R-Texas) — chairman of the House Science, Space, and Technology Committee — is currently circulating a letter among fellow lawmakers with a similar call. 

“Some pieces of legislation, like the Iran nuclear deal, are simply so consequential that they demand revisions to the Senate’s procedures,” Smith wrote in the draft letter.