He might be FBI ( Full Blooded Italian ) but I gather the 'other FBI' the CIA and various other 'interesting dark agencies) are behind the DNA profiling ... and, ultimately it's likely to backfire as you might in future be refused health insurance based upon your genetic predisposition towards certain conditions ...
You haven't actually quoted any 'evidence' to support your argument that it's a bad idea...
But whether it's a physical wall (or whatever) you seem to be opposed to the idea that the USA ( and one assumes any other country?) should have any control as to who enters / remains within its borders?
Suppose it's no different to finding a bag in the street containing that much in cash money ... there's sure gonna be some bad juju attached to keeping it !
Maybe there's a local law or custom concerning 'Finder's Fees' ?
Fact is that 'without money' it's very difficult to enter most countries ... Border checks now seem to 'routinely' include questions as to 'How will you support yourself during your stay...' and without money / proof of funds the 'assumption' seems to be 'intends to work illegally' and you get put on the next plane back
Set the alarm n get up as usual ... there's probably nothing worse than lying longer in bed and fearful thoughts creeping in as to how you'll fill the day ...
It's certainly a whole lot better idea than trying to travel the world with no money at all ... but better you have a craic at it in Ireland Pedro ... the rest of the world may not yet be ready for you !
( p.s. don't try hitching a lift from airline pilots ... they never stop for anyone, ever ! )
The true causes of tourerism ...
It might be a play on words ... you'll have to ask a grown up for !!!