From the piece:
The health-care law does offer new coverage options for legal immigrants. They, like American citizens, are eligible for subsidized health insurance coverage if they earn less than 400 percent of the poverty line ($44,680 for an individual).
Legal immigrants can also qualify for Medicaid coverage after five years of legal residence in the United States. This was true prior to the Affordable Care Act, but will likely become more meaningful when many states expand their Medicaid programs up to 133 percent of the federal poverty line.
Legal immigrants will also be subject to the mandated purchase of health insurance coverage at the start of next year.