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Another vaccine has shown its effectiveness against the coronavirus. There's one caveat though, it's not as effective against the South African variant, which has now made its way to the U.S. Also, how unified is the GOP around Donald Trump these days? After the insurrection at the Capitol, some Republican Congress members tried to distance themselves from the former president. But others never left his side. And President Biden says he'll take on environmental justice issues. But other presidents have made similar promises.