from washington with more on the requirements and impacts more than 100 million americans. alexandra, good morning. >> good morning. what the supreme court is considering right now is how much power the executive branch can exert in the lives of americans. listen in to some of the questions posed by justice roberts. >> i wonder if it's not fair for us to look at the court as a general exercise of power by the federal government. and then ask the questions of why doesn't congress have a say in this? why doesn't primary responsibility of the states. >> seven of the eight justices appeared in the courtroom, justice sotomayor elected to dial in from her office. they are now weighing the labor department's emergency regulation requiring employees at companies with 100 or more workers to get vaccinated. >> most osha regulations, all of the ones with which i'm familiar affect employees when they are on the job but not when they are not on the job. and this affects employees all the time.