Some people posted here that leaving Canada after you receive AIP although not guaranteed reentry they should let you back. My lawyer advised I don't leave because in addition to my AIP they asked for more documents right before they gave me AIP. They actually gave me AIP before I sent all the required documents in. My lawyer also said that ÀIP doesn't give you a better chance of reentry than before you received AIP. Therefore my message is just because you have AIP every situation is different as to whether you should risk leaving Canada for a short visit to the us or not.