More than a month after moving into the White House, President Bush continues to receive former occupant Bill Clinton's mail, Bush reported Monday. 'Is it so hard to fill out a change-of-address form at the post office?' asked Bush, waving a copy of Rolling Stone addressed to Clinton. 'I suppose he expects me to mail all this to him.' Bush added that if one more Sierra Club newsletter arrives for Clinton, it is going straight into the trash. 