I'm not so sure about all immigrants becoming American patriots Furball. In Denver we have a large hispanic population that is largely Mexican in origin. Many of them participate in traditional Mexican holidays like Cinco de Mayo. Many of them have no intention of becoming US citizens, instead they work here and send cash back to relatives still living in Mexico.
Cinco de Mayo, that reminds me of an incident that happend maybe 15 years ago or so. There was a Cinco de Mayo celebration across the street from the apartment complex I lived in. Many participants of the celebration tryed to park in the parking lots for the apartment complex (private parking for residents only). My girlfriend at the time had to run to the store, while she was gone a Camaro full of Mexicans took her parking spot. When I tryed to politely explain that they were on private property and their car would most likely be towed, I was given a string of expletives and racial slurs that would make the proverbial sailor proud.
I watched the Mexicans until they had entered the celebration, then backed my 3/4 ton pickup up to the Camaro, hooked up my tow rope and proceeded to drag their car out of the parking lot into the street, where I left it blocking the road. Sure enough about 10 minutes later a police car shows up, 15 minutes after that a tow truck showed up and towed the Camaro away.
The look on those Mexicans faces when they came back to get their car was priceless.