Boustany driven to enter race Frustration in dealing with issues was spark By PATRICK COURREGES pcourreges@theadvocate.com Acadiana bureau LAFAYETTE -- Retired heart surgeon Charles Boustany Jr. seems to be getting taken seriously in his first run for public office. The Lafayette Republican's candidacy in the Nov. 2 election for Louisiana's open 7th Congressional District seat has gotten the open backing of major figures in the national Republican Party -- including Vice President Dick Cheney -- hundreds of thousands of dollars in campaign money and the targeted opposition of national Democrats. A year ago, Boustany, 48, was still a practicing heart...