>> reporter: tonight, the biden administration on the defensive after several setbacks in the battle against covid. our martha raddatz pressing the surgeon general on the testing troubles across the country. >> we're pulling out the stops on testing right now, and that's why in addition to the 50 million tests we sent to community health centers, in where people can get free tests. >> but, dr. murthy -- >> we're also -- >> i know what you're doing. >> -- rapid at-home tests. >> i know what you are doing now, but the question is why wasn't it done sooner? look, you say, you always hold out hope, but you plan for the worst. it doesn't sound like that happened. >> well, there was planning, martha. >> reporter: critics say not enough. but tonight, the white house has some criticism of its own, blasting the supreme court for blocking the administration's workplace vaccine mandate. >> it was a setback for public health. >> reporter: the nation reporting nearly 800,000 new covid cases a day, pushing hospitals to the brink. >> i think it's going to get much worse. the problem is we are running out of health care workforce.