I sympathise with your (rare) regard for the Constitution, but money transmission is a forum of commerce, and thus the Congress may regulate it when it occurs across state or national borders. Just as not all good ideas are constitutional, not all bad ones are unconstitutional.

I would personally like to see the money-laundering laws repealed, as the activity they proscribe is not itself a true crime. They are prone to abuse, and appear fundamentally unjust to me. But they are at least in principle constitutional.

The NSA is not breaking the law. Again, not all good things are mandated and not all bad things are forbidden. There's a difference between pushing to the very edge of what the law permits and pushing further. In many ways, it's a hacker's mindset.

I think that there's an excellent argument that the TSA is violating the 4th Amendment. It's not at all obvious how stripping me naked with X-rays is consistent with the security of my person, nor is it clear that it is reasonable to be searched before boarding transportation. Additionally, I fail to see how disarmament of travellers is consistent with the 2nd Amendment.

I would probably support an amendment to permit searches for explosive devices, were it properly worded.