So the whole thing with passports at the border, and the warrantless wiretapping, and the NSA CIA FBI spying is just to keep Americans contained?

and where has all the money gone that was poured into the Department of Homeland Security anyway?

The New York Times:
"Tracking visitors took on particular urgency after the Sept. 11 terrorist attacks, when it became clear that some of the hijackers had remained in the country after their visas had expired.

But in recent days, officials at the Homeland Security Department have conceded that they lack the financing and technology to meet their deadline to have exit-monitoring systems at the 50 busiest land border crossings by next December. A vast majority of foreign visitors enter and exit by land from Mexico and Canada, and the policy shift means that officials will remain unable to track the departures.

A report released on Thursday by the Government Accountability Office, the nonpartisan investigative arm of Congress, restated those findings, reporting that the administration believes that it will take 5 to 10 years to develop technology that might allow for a cost-effective departure system."