The missile defense shield is for incoming missiles...of which China has technology, thanks to Mr. Gets -his-cigar-sucked-while-he's-deploying-troops-to-Bosnia. Stick with the BS skills you honed in the EX-administration. You're outta your league with the grownups.
The answer is that despite the fact that the United States today is an extraordinarily secure nation, there are dangers on the horizon. In the future, potential adversaries, having learned from Saddam Hussein's mistakes during the gulf war, are unlikely to confront the United States directly. Instead, they are likely to resort to "asymmetric" strategies -- approaches that enable them to focus on U.S. vulnerabilities. A particularly dangerous asymmetric threat arises from the proliferation of ballistic missiles, especially if they are equipped with nuclear, chemical or biological warheads.
In 1998, the country received a wake-up call with the report of a commission headed by the current secretary of defense, Donald H. Rumsfeld. This report concluded that the lead time necessary for hostile states to develop ballistic missiles was much shorter than the Clinton administration was claiming. Shortly thereafter, North Korea and Iran conducted ballistic missile tests. In response to these events, Congress passed the 1999 National Missile Defense Act, which then-President Clinton reluctantly signed into law. [End Excerpt]