China built a wall. It is easy to seal up the border. You start in Washington, Maine, Minnesota and you work your way cross country.
Same thing in the south
Cost? 100 billion. And worth every penny.
Free labor too... 10 million Mexicans in the U.S. could donate a couple months of labor, before we ship them back south of the wall.
Nah. At $1M per mile, a fence would cost under $10B. About half what the Big Dig in Boston cost.
Border control naysayers want to paint this as un-doable. It is VERY do-able.
Look at China. Now look at the size of its wall.
Next silly suggestion?
Curious example... since the Great Wall didn't work. Neither did the Maginot Line. Both of those were also a mere fraction of our 22,000 miles of border.
It's easy to say "seal" the borders, and certainly more effort at border patrol should be (and believe it or not, has been) done, but it is useless without a general hardening of the country as a whole. It is perhaps even more important to make it difficult for them to move and communicate if they do get in. Because they will get in nomatter how high the wall.