I’m sure one of y’all will know this right away, but I just can’t retrieve it from memory. I read a book whose story involved China invading the U.S., via Florida, IIRC. In the book, the President is single and gets hooked up romantically with a woman who is suspected of being a foreign agent.
The President’s daughter is an infantry soldier. Unless my imagination is better than I believe, I think I saw the movie also. Anyone?
I’ve seen a novel fitting that description in the library and the bookstore a few times. If it’s the same one you’re thinking of, it’s titled simply “Invasion.”
I can’t recall the author’s name, though. Sorry.
Ranchoth
Yep, it would make sense for China to conquor Europe first and gain access to the US via Florida. Probably the last place you would expect an invasion from China to come from 
Ah! Pulp fiction is alive and well!
Reading the OP, I got to wondering about this particular theme (i.e., invasion and/or occupation of the U.S. by a foreign power) in popular literature. How long has it been around? The earliest examples I can think of are both from pulp magazines published in the '30’s. One was Operator 5, a kind of super-spy and super-Boy Scout who regularly defeated nefarious schemes by foreigners to subjagate the United States. Military attacks and invasions by foreigners and sometimes by domestic insurgents were a staple of that magazine. Another was Dusty Ayres and his Battle Birds, who spent 7 or 8 issues of a limited run fighting off a vaguely Hitlerian empire which had invaded Canada and was moving down into the U.S.
But those are the earliest examples I can think of. Can anybody come up with titles earlier than the mid-30’s? Jack London’s The Iron Heel, published sometime around the turn of the century, was about a fascist takeover of the US, but I’m not sure that’s the same thing.
Back before foreign hordes were invading America, they were attacking England. The earliest example I’ve read was The Battle of Dorking: Reminiscences of a Volunteer written by Sir George Chesney about a German invasion of England. This story created quite a sensation when it was published in 1871 (in the immediate aftermath of the the Franco-Prussian War).
Chesney’s story, along with several later ones, was collected in The Tale of the Next Great War, 1871-1914 (edited by I.F. Clarke). In the introduction, Clarke discusses earlier invasion themed stories such as The History of the Sudden and Terrible Invasion of England by the French in 1851 or the play The Armed Briton: or, the Invaders Vanquished which was performed in 1803.