Planned changes to Social Security’s disability program could leave hundreds of thousands of older blue-collar workers ineligible for aid. These changes would fall disproportionately on some of President Trump’s most loyal supporters.

The Trump administration’s upcoming proposed regulation would make two hugely consequential changes to the Social Security Administration’s disability system, according to four SSA officials with knowledge of the plans. First, it would modernize the job listings that Social Security’s disability adjudicators and judges use to decide if there’s work available in the U.S. economy that a manual laborer could do despite physical impairments — like a low-skilled desk job at a computer or driving for Uber or DoorDash. Second, the new rule would almost entirely remove age as a criterion, in most instances making a 50-plus-year-old like Tincher no more eligible for assistance than a 20-something.