What is a waste of time and money is the searches themselves. They will not stop a single attack.
If I was a bomber, and I was stopped (which there is only a small chance of) I would simply refuse to be searched, turn around, and walk ten blocks to the next station. It wouldn't take long before I succeeded.
This is a "feel good" policy designed to cover up the massive failing by the government in securing the nation.
Forts have walls for a reason. It is easier to keep the enemy out than to fight them within.
We should expel all non-citizens from Muslim countries, and halt all immigration from those countries.
The cost of defending ourselves at the border is less than searching every person that travels within the border.
> We should expel all non-citizens from Muslim countries, and halt all immigration from those countries.
I agree with you, but tragically the people entrusted with protecting us aren't up to speed:
1. Surveillance, bomb sniffing dogs
2. Searches
3. No bags, packpacks on the subway
4. Profiling
The unthinkable happens, and there is a great hue and cry.
5. Non-citizen Moooslims are expelled
6. The ACLU sues...