Republican senators face pushback from both sides on gun control

Driving the news: Sen. Mike Lee (R-Utah) took questions on "Fox News Sunday" over his refusal to endorse or oppose the bipartisan bill. Lee is generally a staunch opponent of gun control laws.

• Host Shannon Bream cited a recent Fox News poll that found "a lot of momentum at least among the public sphere" to pass gun legislation, asking Lee, "Are you out of step with your constituents?"
• A large majority of Americans support background checks for guns (88%) and ammunitions (80%), raising the legal age to buy assault weapons (82%) and red flag laws (81%), according to the poll.
• Lee responded that constituents are "not asked questions about specific language within legislative text."

• He added: "It's the job of the lawmaker to look out for the interests and the rights of the law-abiding citizens they represent."

The other side: Sen. John Cornyn (R-Texas), who has participated in efforts to strike a bipartisan deal, was booed when he got on stage at the Texas GOP convention this weekend.

• Rep. Dan Crenshaw (R-Texas) and his staffers were also physically assaulted at the convention. After the Uvalde shooting, Crenshaw said he would support expanding background checks to include the juvenile history of those between the ages of 18 and 21 who seek to buy guns, according to Newsweek.