How Can the Environment Effect Homeland Security?

From Rush:

Story #5: Environmental Justice: Big Sis Battles Global Warming

RUSH: Last Friday at an "all-day White House conference on environmental justice --" now, what is environmental justice? What's food justice? Crazy, whacked out liberal terms. "Homeland Security Secretary Janet Napolitano announced that her department is creating a new task force to battle the effects of climate change on domestic security operations." They can't do anything about climate change directly, so they repackage it and they lump it together with Homeland Security. If I didn't know better I would say that these people are the new brownshirts. Isn't gonna be long before Big Sis is gonna be coming into our homes demanding to check the uses of appliances, lightbulb placement. These Democrats, folks, they are doubling down now against the majority of Americans in revenge for the bashing they got at the polls. The story we started off today with about how they're enlisting garbage men to spy on you, all of this spying on average citizens, this is how they do when they lose elections. You are gonna pay.

And notice, folks, that battling the effects of climate change seems to have a much higher priority than protecting the people on the border from an armed invasion from Mexico. Climate change is much higher on Big Sis's list than border security. Environmental justice. Say 'justice' and nobody can disagree with it.

--Homeland Security Secretary Janet Napolitano announced that her department is creating a new task force to battle the effects of climate change on domestic security operations

What kind of effect can climate change have on domestic security operations? Unless Homeland Security is thinking the amount of illegal aliens coming in from countries that will soon be under water (supposedly) will increase?