People who advocate technological solutions say we have too much illegal immigration. This assumes that there is a different, lower, level of illegal immigration that is not too much.
People who advocate for a wall seek to eliminate all illegal immigration. This assumes that the best number for illegal immigration is zero.
The problem with the technological approach is that the “correct number” can be adjusted up or down to suit the politics of the day. The good thing about a wall is that it cannot be adjusted. It always reduces illegal immigration and all improvements drive the number down toward the desired number of zero.
If we eliminate illegal immigration, we can meter immigration into the country by legal means. This is the proper way to do things. That way, everybody who is here has a right to be here, no worker can be exploited because he does not have legal status, and it reduces the power of government because nobody is dependent of the forbearance of the authorities.
Technological solutions are evil. They perpetuate the evil system that results in exploited illegal labor, which is akin to modern slavery.
Border cameras are no different....the guy is long gone 5 minutes later.