Their worst dreams come true....

The nightmare scenario: The illegal immigrant problem becomes so bad that the government closes the borders to keep out the flood of people seeking a better life. But despite military enforcement, the illegals keep coming. Emboldened, they organize armies and fight against the military. After a protracted struggle, the illegals actually wrest a large border area away from the government.

Thus was the state of Texas born, and the Mexicans sent packing from their own territory.

More later.