About the human population explosion.

[Massacure]

The U.S. and European populations are pretty stable not counting immigration. Could they just shut their borders to inhabitants and be capable of feeding themselves? I know oil is used a lot, but there is always the possible of developing renewables on a manhatten style project.

[BlueEyedSon]

1. Yeah we have had a lot of luck sealing our borders?

But then who will do the jobs that Americans find too menial?

[Massacure]

2. There aren't enough people on the border to prevent illegal immigration.

The U.S. would have to hire more people. It wouldn't have to be closed completely, but tightened up and then loop holes closed.

[Maple]

3. There isn't any explosion

The UN predicted this sometime ago...a near future rise, a levelling off, and then a drop. Populations in many countries are aging, and near or at zero population growth.

But in any case, no we can't keep them out. The US can't even keep Mexicans out, and Canada has the longest coastline in the world.

The 21st century is a world of no walls, and no borders in spite of all the patriotic speeches and hype.

[Massacure]

4. Isn't border patrol understaffed?

[Maple]

5. If you mean between

Canada and the US...the entire US military, all branches, standing in a line couldn't reach from one end to another.

If you mean between Mexico and the US, I assume there is a similar situation since they've been 'beefing up' the border patrol since I was a kid, yet crowds are still apparently coming in.

And of course you can get to the US by sea from South and Central America, the Caribbean...for every one that gets caught, ten do not.

US coastlines, like Canadian ones have lots of cover.

[Massacure]

6. Well, the border is 2000 miles long.

Right now there are 10,700 agents, with 90% of them at the Mexican border. That means there are 9630 at the Mexican border. If each of them work 42 hours a week, then you have 2400 agents on the border at any given time. Each has to protect nearly a mile.

If you had 80,000 agents you could put one every 528 feet.

Put another 20,000 ports and airports.

[porphyrian]

7. Short answer, no. - n/t