Never on These Shores by Stephen R. Pastore
The Aldous Huxley Prize was established in 2005 for speculative, distopic or politico-fantasy writing. "Never on These Shores" is the first (and so far, only) winner.
The book takes the premise that when the Japanese bombed Pearl Harbor, the Germans attacked the Atlantic fleet while they were racing to Englands aid. Now, the Japenese are on the west coast, The Germans and Mexicans are coming through Texas, and the Italians are taking Florida. American forces are stranded in Europe and Asia, so women, old men and gays are defending the country as best they can.
It wasn't until the end of the book that I saw this is volume one. It sets up the main characters and the actions both Americans and invaders are beginning. I thouroughly enjoyed the book; I will be watching for Volume II.