No. It won't let you for suspicion of trying to mod the game.
Currently there is now way possible to mod with a USB in Halo Reach online.
Usb Stick.
Maybe with modio, but in reah, there isn't much to mod.
Download horizion360 Get a usb Download usb explorer
A USB stick is both an input and an output device. Data can be written to the stick, and can be extracted from the stick.
you have to use a usb thing. it just plugs into the xbox where the controller goes. u download the mod onto the usb.
you can transfer them to usb then use a modio or horizon which has a built in usb explorer
to plug in your usb stick/pen/drive... (:
You can't
You cannot because its illegal to do so.
no