The Supreme Court has upheld by a 6-3 decision a key provision of President Obama’s signature healthcare law by saying that tax subsidies are Constitutional even though the law does not specifically say that federal subsidies can be issued in states with no state healthcare exchanges.

“After more than 50 votes in Congress to repeal or weaken this law, after a presidential election based in part on preserving or repealing this law, after multiple challenges to this law before the Supreme Court, the Affordable Care Act is here to stay,” Obama said in the White House Rose Garden.

“Congress passed the Affordable Care Act to improve health insurance markets, not to destroy them,” Roberts wrote in the court’s decision, adding that nationwide availability of the credits is required to “avoid the type of calamitous result that Congress plainly meant to avoid.”

“In this instance,” he wrote, “the context and structure of the act compel us to depart from what would otherwise be the most natural reading of the pertinent statutory phrase.”

The decision was the second time in three years that the Supreme Court has ruled against major challenges to the Affordable Care Act.

Justice Antonin Scalia said: “We really should start calling the law SCOTUScare,” Scalia said. SCOTUS is the acronym for the Supreme Court of the United States. “This court has no free-floating power to rescue Congress from its drafting mistakes.”