Quit! Silence!
Lets not discuss the millions pouring into our country illegally, and this epic national security time bomb! This can wait until after the election!
Don't upset the apple cart for Bush!
The thing you're forgetting here is that there is no practical way to seal our borders against the most dangerous well-financed terrorists. If you seal the land borders, they'll fly in by plane or helicopter. If you search ever plane entering the country, they'll come in by boat from Mexico, Canada, or the Bahamas. If you search every boat tying up at a dock or harbor, they'll go to a remote area and just beach the boat and leave it. By this point you've also tied up hundreds of thousands of police and soldiers who would have been much more effective on the offensive outside our borders. This is why our anti-terror strategy must and does rely on going on the offensive against known terrorist groups outside our borders.