Welcome to collateral damage, Washington, DC, style. In another classic example of how a sudden political crisis can take on all sorts of unanticipated permutations, the ongoing imbroglio over top Washington, DC, lobbyist Jack Abramoff is claiming its first casualty with ties to the government-sponsored enterprises. Alexander Strategy Group, one of the most highly paid Fannie Mae lobbying firms, plans to close most of its operations at the end of January, largely because of close…