Congressional leaders are dealing with a new headache after more than 40 House Republicans came out in opposition to any spending legislation that does not include core components of the party’s signature border security bill passed last summer.

While no deal has been struck on the remaining six appropriation bills, Reps. Bob Good (R-VA) and Chip Roy (R-TX), along with 41 other House Republicans, sent a letter pressing their GOP colleagues to oppose any spending legislation that does not include the party’s flagship immigration bill, H.R. 2.