"It's about helping 470,000 Michiganders have a better life," Snyder said during a Capitol news conference after the vote. "Going to the ER for your healthcare, while we have wonderful people in the ER, is not a good solution."
The Senate fell two votes short of giving the bill immediate effect, which may force new Medicaid recipients to wait until April for coverage instead of January. Snyder said he was hopeful the Senate would revisit the timing, asking "should we make people wait three more months?"
Medicaid expansion is part of a strategy to ensure nearly all Americans have health insurance under the 2010 Affordable Care Act. It was designed to cover the neediest uninsured people but became optional for states because of a Supreme Court decision last year.
Many GOP-led states have declined the expansion, despite the U.S. government promising to cover the entire cost for the first three years and 90 percent later. Michigan is poised to become the seventh state led by a Republican governor to sign up.
The legislation won approval about 2½ hours after the Senate fell one vote short on its first attempt, when Republican Sen. Tom Casperson of Escanaba surprised by voting "no." That allowed one of the fiercest opponents of the federal healthcare law, Sen. Patrick Colbeck from Canton Township, to not vote, preventing Republican Lt. Gov. Brian Calley from breaking a tie.
Casperson voted "yes" the second time around after the bill was amended to limit how much hospitals can charge the uninsured for medical care.
Pressure from advocates of Medicaid expansion had been building in order for the state to receive federal OKs before residents can enroll.
Medicaid already covers 1.9 million, or one in five, Michigan residents — mainly low-income children, pregnant women, the disabled and some poorer working adults. The legislation would cover adults making up to 133 percent of the poverty level, or $15,500 for an individual and $26,500 for a family of three.
The bill includes GOP-written requirements that nondisabled enrollees pay some of their medical expenses after six months and pick up more costs after getting Medicaid for four years. They could lower their costs by not smoking or adhering to other healthy behaviors.
The newly eligible also would no longer be covered if savings from the expansion — primarily from shifting state mental health costs to the federal government — do not cover the state's cumulative costs. The nonpartisan Senate Fiscal Agency estimates the expansion would stop in 2027.
Supporters contend that offering health insurance to more poor people will make them healthier and minimize their expensive trips to the emergency room, saving money throughout the health system and also helping businesses meet requirements under the health law.
"It's a benefit to every person in the state of Michigan, whether you're in that expanded Medicaid population or you're lucky enough to be one of us, who has taxpayer-funded healthcare," said Senate Minority Leader Gretchen Whitmer, an East Lansing Democrat. "We know we all pay for uncompensated care in this state."
Opponents question such a large government expansion when the U.S. is trillions of dollars in debt and are suspicious of money-saving claims. Tea party and conservative activists say they will oppose Snyder's expected re-election bid because of his push to expand Medicaid coverage.
"The bottom line is we're spending more money," Colbeck said, calling the expansion "a path to a single-payer system where nobody gets control of their healthcare."
After the Senate adjourned in June without voting on Medicaid expansion, Snyder spent the summer traveling to Republican senators' districts to push publicly for the House bill, and pro-expansion allies paid for billboards calling out GOP senators to support the expansion.
Senate Majority Leader Randy Richardville asked a workgroup to study the issue and held hearings that resulted in changes to the legislation — none considered deal breakers with Democrats or the House.
Eight Republican senators and all 12 Democrats voted for the bill. Eighteen Republicans opposed it.