Group proposes a new system that lifts national consumer protections and gives control of health care to the states

The Affordable Care Act should be repealed in August and replaced with a new system that lifts national consumer protections and gives control of health care to the states, according to a proposal by a conservative group set to be released Tuesday.

The proposal risks irking centrist Republicans who want to focus on other subjects. Republican leaders have said they have no appetite for another push to repeal the ACA before the November midterm elections unless such a bill clearly has the votes to pass.

Republicans faced a series of obstacles—including internal division and unified Democratic opposition—as their effort to repeal the ACA collapsed last year. There is little evidence those dynamics in Congress have changed.

Still, the proposal’s release reflects the continuing eagerness of conservatives to topple the ACA, a longtime Republican promise whose window could close if Democrats make gains in the midterms as expected.