Without the change, Black said at the time, the law "could result in individuals whose incomes are up to 425 percent of the poverty level receiving Medicaid. This is unacceptable."
Many Democrats have concerns, however.
They point out that the MAGI definition was chosen to create a seamless transition between eligibility for Medicaid and for insurance subsidies under the healthcare law. By counting Social Security benefits as income, Black's bill tightens the eligibility standard not only for Medicaid but for private plan subsidies as well.
During markup, Rep. Joseph Crowley (D-N.Y.) called the Black bill "Republicans' first step on the slippery slope to limit middle-class Americans' ability to claim certain deductions for retirement security, college tuition expenses or even adoption assistance."