The NTSB hearing on the crash near Victoria, Texas, that killed one man begins Tuesday and continues through part of Wednesday.
"From our investigation of the Victoria accident, we have found that some U.S. motorcoach operators may be taking advantage of loopholes in the system to register foreign-made motorcoaches in this country, even when the vehicles do not meet U.S. safety standards," NTSB member Debbie Hersman, who will preside at the hearing, said in a statement.
The bus that crashed in Texas was carrying 47 passengers on a return trip to Houston from Mexico. The driver veered off the road and overcorrected, causing the bus to flip on its side and strike a guardrail. Pablo Mendez was killed and his wife and daughter were injured along with dozens of other passengers. The arm of one of the female passengers was amputated after the wreck.