- 25 billion is the high estimate for a border wall, but it's a one time fee. 750 Million* in maintenance a year (high end fee). But reduced need for federal agents, dogs, patrol cars, etc. Cameras can do all that.
- compare the above to the "true" cost of illegal immigration at over 54 billion a year. **
(note this is not a study on how efficient the wall would be, but if it blocked 100% of illegals in ten years it would easily pay for itself, possibly in 5 years). And any illegals that got by could be retrofitted with a more expensive model to increase the effectiveness.