Following an announcement that her U.S. visa has finally been approved, British musician M.I.A. has taken to Instagram to hint at a possible forthcoming US tour in support of her latest (and final) album A.I.M.The Instagram image displays a text exchange that asks, "To tour or not to tour" followed by a message that says, "You're visa has been approved."The singer had previously expressed concern that her label Interscope may not release AIM, because she didn't have a US visa to promote it in the United States.As she mentions in the track, "VISA" from the album. "Time for a banger, throw up your middle finger ….. I ain't really looking for no drama".