wray. >> this is nbc "nightly news" with lester holt. across america reporting tonight from nashville. good evening from one of the most legendary stages in all of music the ryman auditorium in nashville nashville is stop number four in our week long journey across america we will dive into the rich history of this place and have much more from nashville shortly. but our top story is one that will soon impact two-thirds of the american workforce. new federal regulations putting the onus on all but the smallest employers to see their workers are fully vaccinated against covid-19 or that they are tested weekly companies now given two months to comply or face heavy fines. the regulations a follow-on to an executive order issued by president biden in september. the white house tonight vowing to do everything it can to maximize compliance with the mandate