in houston today, the tsa is closing a security screening checkpoint at george w. bush -- george h.w. bush int continental airport. this is the second day in a row they've had to do this because of a shortage of workers due to the government shutdown. renee marsh is live at reagan national airport with more on the shutdown's impact on travel. >> reporter: well, george h.w. bush inter continental airport forced the shuttledown because of a lack of tsa or a shortage of tsa staffing at the armt. airport. they did this on sunday and that checkpoint remains shutdown this morning. the airport is urging passengers to show up early because of this. of course this all comes after miami international airport was forced to shutdown one of its terminals due to tsa staffing shortage. that was over the weekend. the airport telling cnn that the