I think a limited system would be a good thing to have. North Korea and Iran aren't trying to build missiles for space exploration
Agreed, but we already have the Patriot II system, and the Israeli Hawk System is even better from what I understand. I think this would fill the 'limited' capability which is prudent.
It is impossible to protect the entire lengh of out borders with Mexico and Canada. Our coastlines are another concern. In such an attack is it likely that the materials used would be tracked to the source. The country that gets caught supplying nuclear materials or using a weapon in this manner would likely get an up close and personal demonstration of the US strategic nuclear forces.
It's not impossible. I'd like to think a country with aims of exploring Mars could be able to secure it's own borders. There are a variety of methods available, many of which are already in use on a small scale (seismic sensors for instance). Canada is starting to develop an ROV based system which patrols their coastlines, why can't we get something similar in action? While I don't have the numbers on what something like this would cost, there's no doubt in my mind it would be cheaper than going to Mars, and could probably be done for less than they amount we've already sunk into the 'Star Wars' scene. I agree that there is no way to completely conceal state support for terror, but what we have to worry about are groups which have no country to retaliate against. It should go without saying these groups wouldn't have an ICBM to use. We know 'nukes in a briefcase' are possible, the Soviets made many of them.
IMO, the "War on Drugs" is the one of the dumbest things to be pushed on the American people in the last few decades. Some deluded fools actually still claim it can be won.
Again, I agree. Trying to prevent drugs flowing in from Mexico (and other places) with open borders is a joke. My point was you'd think those still deluded in thinking it's worthwhile (read: conservatives for the most part) would jump at the chance to "kill two birds with one stone" so to speak. As President Cheney himself likes to state so often, we're under attack. Too bad he can't act like it, and consider our borders as important as South Korea's.
We know there is a blackmarket for former Eastern block weaponry. We know we're at war, and there are many terrorist groups out there that woudl gladly give their own lives to strike a mortal blow to the US. We also know our borders are porous enough to permit thousands of illegals to flow into out country EVERYDAY. The likelihood of a bomb (nuclear, bio, dirty, what have you) been smuggled in across out open borders and coastlines is far more likely than some far off country suddenly being able to lob a missile at us from the other side of the globe. Add into it both NK and Iran know we have satellites and would see the act as it unfolded, I doubt they would act against us in a manner which would result in their countries being turned into the worlds largest radioactive parking lots.