Passenger trips in early spring and summer were up 25% over the same period last year.
Vice President Kamala Harris cast the tie-breaking vote.
School districts across the country are trying to find ways to fill the gaps.
New York City Mayor Eric Adams greeted the bus, which was sent by Texas Gov. Greg Abbott.
Former U.S. Ambassador to the U.N. Bill Richardson said any deal would likely be a two-for-two exchange.
The suspected driver, Miguel Espinoza, 45, is currently being held in the Galveston County Jail, according to online records.