According to a press release from Senator Udall (New Mexico)…

Today, U.S. Senator Tom Udall (D-N.M.) and U.S. Senator Cory Gardner (R-Colo.) introduced a bill to put wireless internet on school buses in order to help students without broadband access at home get online to study and do homework. The legislation would allow the Federal Communications Commission’s (FCC) E-Rate program to reimburse schools that place wi-fi technology on school buses carrying students to school or school related extracurricular activities.

Looks like Minnesota might be a leader here too – the Minnesota Legislature decided to invest in wifi on the buses last year.