Rumsfeld wants that firewall between Northern Command and...

Rumsfeld wants that firewall between Northern Command and DHS because he's legitimately afraid that otherwise, Congress will rob the Defense budget to pay for homeland-security initiatives. The problem with that approach is that it provides no incentives for senior NorthCom leaders to build relationships with mayors and governors around the country, closely studying what capabilities they have and exactly what kind of help they would need in a disaster.