The move, part of California's drive to make sure all its residents have health coverage, does not come without opposition. (Photo: Shutterstock)

Among its many firsts, California looks to be claiming a new one: the extension of health benefits to immigrants ages 19 to 25 who are in the country illegally.

Not everyone is happy with the plan, according to the Sacramento Bee, although perhaps not for the reasons one might expect. While those against extending such benefits to those who have not entered the U.S. legally are vocal in their opposition, Republican lawmakers oppose the measure—part of California's drive to make sure all its residents have health coverage—because part of the deal is to levy a tax on people in the state who don't have health insurance.

Related: California's Newsom proposes middle-income health premium subsidy

According to the Sacramento Bee, the health care move is part of “a broader plan to spend $213 billion of state and federal tax money over the next year.” Legislative approval would see  low-income adults aged of 19 and 25 who are in the state illegally added to its Medicaid program.

Only that particular age group whose incomes are low enough to qualify would get those benefits, although the state Senate had wanted adults 65 and older to be included; State Sen. Maria Elena Durazo, D-Los Angeles, has proposed a bill to do just that. With the cost of the limited reach of the program expected to total $98 million—it will cover about 90,000 people—the Newsom administration felt covering seniors too would be too expensive.

Sen. Holly Mitchell, a Los Angeles Democrat who led the budget negotiations, said of the move, “California believes that health is a fundamental right.”

But it's not just immigrant families who will benefit from health coverage; the deal—the first of its kind in the country—also provides help for middle-income families to pay their premiums. A family of four earning as much as six times the federal poverty level, more than $150,000 a year, would be eligible for about $100 a month in premium assistance.

The overall budget, of which the deal is a part, still has to be approved by the full state legislature, so it's not necessarily a done deal; in fact, Republicans on the negotiating committee voted against it, claiming it was unfair to provide coverage to illegal state residents while taxing legal residents for not buying coverage.

Read more: 

• Do immigrants drive down health care costs?
• Leave health insurers out of immigrant eligibility, AHIP says
• California Dems push to expand ACA to undocumented immigrants