Sutton was famously quoted as saying he robbed banks because that’s where the money was. Kevin McCarthy, on the other hand, wants to cut the deficit by going where the money isn’t: domestic discretionary spending.
According to an article in the NYT, if all of the GOP’s favorite categories–defense, veterans’ benefits, Social Security, Medicare, etc.– are exempted, the budget caps proposed by the House will require a 51 percent cut for all other discretionary spending over the next decade. Cuts of that magnitude will basically make it impossible for the federal government to carry out most of its essential functions.
Hence, the appeal to MAGA Republicans.