Triple the border patrol presence on the southern border and start guarding our northern border, stop Wet Foot, Dry Foot, crack down on employers who hire illegals and streamline the immigration process so people don't come illegally out of frustration with the system.
No! That not only will not stop illegal aliens, but it is costly.
1) It makes sense financially when you take into acount the millions & billions of dollars that get wasted because of illegal aliens, in healthcare, social servicesd, crime, schools, etc.
Except the figures are not that high. Considering they can't qualify for a lot of welfare and they still add productivity to the economy, it is arguable they might even be helping (more so than new legal immigrants who have access to entitlements).
2) The "fence" does not neccessarily mean a physical fence. It can be a barrier enforced through various electronic means and ground troops.
Either way it won't stop illegal immigration. All about incentives

Any electronic means or troops is still costly.
Sounds like if someone suggested, say, a police department, it would trigger "big brother" nightmares for you.
If it is unneeded police, sure.
Proof? Supporting arguments?
It cuts into liberties- at the least privacy. It also hands everyone's private info to bureaucrats under a government system. As for the Constitution- it violates the 10th amendment, the long forgotten amendment (but two wrongs don't make a right).
The illegal alien invasion is costly to this country in many ways, way beyond the immense financial cost. Real ID and real enforcement would be a microscopic fraction of that.
Illegal immigration arguably helps our country and has a negative cost (as in creates wealth, not destroys it). Even then, it is no where near as costly as a fence and arguably not so much as Real ID.