Simplify the following text for a Grade 7 native English-speaking person.
Original: Eisenstein , Alexandrov , and Tisse were allowed , after a month 's stay at the U.S.-Mexico border outside Laredo , Texas , a 30-day `` pass '' to get from Texas to New York , and thence depart for Moscow , while Kimbrough returned to Los Angeles with the remaining film .
Simplified: Eisenstein , Alexandrov and Tisse were , after a month 's stay at the U.S.-Mexico border outside Laredo , Texas , allowed a 30-day `` pass '' to get from Texas to New York .