The wife of Democratic vice presidential candidate John Edwards said Monday that Republican criticism of Sen. John Kerry for mentioning Mary Cheney's sexual orientation was a distraction from more pressing issues. Campaigning in Denver, Elizabeth Edwards also argued that President Bush has tried to politicize the issue of gay rights in pressing for a constitutional amendment to ban same-sex marriage. ``I believe the president has tried to use the constitutional amendment as a wedge issue, instead of addressing things like health care or real reform and attention to our veterans' issues,'' Edwards said. Mrs. Edwards also said she was upset...