<< All joking aside, this is a pretty serious issue. We have the technology to destroy these things--we should cough up the dough and begin work on an asteroid defense system before it's too late (i.e. NOW).
Sadly, the nature of humanity is such that if a threat is not immediately visible to us no action will be taken. Apparently the *illusion* of safety is enough for people--the *reality* is something nobody seems inclined to hear about (9/11 is an excellent example of that). >>
Humankind has another problem: exaggerating the minor issue, while choosing to ignore the more important issue(s).
Spending billions of dollars on a missile shield which might or might not be used, or using the same money to come up with some good ways to deal with incoming space-'junk', which varies in size from a few millimeters to many kilometers and can wipe out a whole continent if we're 'lucky'.
The latter is a) much more likely to occur and b) will be much more devastating than any missile we can think off.
But I don't think that anyone will ever choose a president who makes use of common sense. Always those irrational Humans.... *sigh*