“The Supreme Court’s conservative majority on Friday appeared ready to reject one of President Joe Biden’s most aggressive attempts so far to combat the spread of Covid-19 — a vaccine or testing requirement aimed at large businesses.

“But in a separate challenge, some justices seemed more open to a vaccine mandate aimed at certain health care workers.

“The court heard arguments for almost four hours as the number of infections is soaring, and 40 million adults in the US are still declining to get vaccinated.

“The three liberal justices on the court expressed clear approval for the administration’s rules in both areas.”

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