The U.S. is holding back $800 million in military aid to Pakistan.

Washington is concerned about some of Pakistan's actions after the Navy SEAL raid that killed Osama bin Laden.
    
U.S. officials told The New York Times that Pakistan authorities arrested an Army major for helping the U.S. carry out that raid and forced more than 100 American military personnel to leave the country.

"Until we get through these difficulties, we will hold back some of the money that the American taxpayers have committed to give," White House Chief of Staff William Daley said.
    
Still, Daley said that Pakistan is a very important ally in the fight on terror and that the relationship between the two nations "must be made to work over time."