this authority. the department of labor back in 1970 under a statute called the asha act was basically given power to regulate workplace safety. so everything from ladders to ventilation to fire escapes, and covid kills people, and so the argument is that workers need to be safe from infection in workplace. so congress gave this power to the department of labor over 50 years ago. i think there's very, very scant chance of a federal koucourt ory court stepping in and stopping this. >> even with this u.s. supreme court? >> again, the way this works is you have to look to the power of congress. congress passes off power to agencies all the time. so in the past when this court has tinkered with what presidents have done like the daca program under president obama, ultimately the court, this supreme court prior to amy