An e-mail:
You are right that Brooks & Dunn appeared with Bush four years ago. However, contrast their classy reaction to the song being used last night with Jackson Browne and Bruce Springsteen’s childish reactions to Republicans using their songs. This is from Kix Brooks today (via cmt.com):
“Seems ironic that the same song Bush used at the Republican Convention last election would be used by Obama and the Democrats now. Very flattering to know our song crossed parties and potentially inspires all Americans.”