Any day now, the Supreme Court will rule on the validity of ObamaCare subsidies, a cornerstone of the controversial law.

The justices are set to decide whether Americans who enrolled through the federal are entitled to the subsidies from the government that they have already been receiving in large numbers.

The health care law says that those subsidies were designed to apply only to people who signed up for health exchanges that were "established by the state," not by the federal government.

The Obama administration argues that the subsidies are available to all who qualify, no matter whether they bought insurance on the state exchanges or the federal marketplace.

Judge Andrew Napolitano said on "America's Newsroom" that he would rule that the law means what it says, that the Supreme Court cannot get in the brain of those who drafted it.

"If you asked me which way I think this will come out, it's impossible to say," Judge Napolitano said. "It's impossible to say from reading the transcript from the oral argument and even from knowing the way these justices think."

"What is a certainty, though, is that they've already decided it, and they're writing their opinions as we speak."

Watch the "America's Newsroom" clip above.

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