Migrants are led from one bus to another bus after arriving from Texas at Union Station in Chicago, Illinois.Chris Sweda/Chicago Tribune/Tribune News Service via Getty Images Reps. Castro and García are calling on President Joe Biden to block Gov. Abbott's busing of migrants. The lawmakers made the plea after a 3-year-old died on a bus headed to Chicago on Thursday. Abbott has been battling with the Biden administration over immigration issues for over two years. Two Democratic lawmakers are calling on the Biden administration to block Texas Republican Gov.