President Joe Biden's administration this week rescinded a Trump-era waiver allowing Michigan to require some Medicaid recipients to show they are working, looking for work or undergoing training as a condition of keeping their health insurance. In a letter to the state, the acting head of the Centers for Medicare & Medicaid Services said Tuesday the plan is "infeasible" in light of COVID-19 restrictions that require the state to continue to cover beneficiaries. It also said the agency has "serious concerns about testing policies that create a risk of substantial loss of health care coverage" even after the pandemic ends, questioning whether they promote the program's core mission.