We would have $4 gas regardless as gasoline is a worldwide commodity.
That's wrong. Now, the majority of those billion people you want to immigrate here are not driving cars or consuming petroleum. If hey moved here, then they would all want a car and would all start consuming petroleum. that would put immense pressure on the price of oil.
We had environmental regs 40 years ago.
Clean Air Act (United States) - Wikipedia, the free encyclopedia
Even reduce that to 35 years ago and what I said remains true.
Please, Nixon created the EPA. You're comparing a situation with no environmental regulations to a situation where environmental regulations are not only ubiquitous but even oppressive. If you hold the regulations constant, then more people means more pollution. There's no arguing with the fact that it means greater consumption of resources.
the last time I checked, the land area of the United States was exactly the same.
You continue to press this absurd notion that people are a liability.
"Liability" is your term, not mine. People consume resources, take up space and give off waste. That fact is undeniable. You have to be a damn fool to believe more of that is a good thing. How would additional people benefit me? The answer is: they wouldn't. That's all I need to know.
Imagine in NY in 1870 you had 1.5M people there. Someone projecting into the future like you would ask, if we had 5 million more people here the place would go to hell. Just the horse shit from all those extra carriages would bury the city and make it unliveable.
People actually did make that claim.
What happened? New york has nearly 10 times as many people and the city is doing fine.
That's like comparing a glass with 1/32 of an inch of water to a glass with one inch of water. The glass is now 3/4 full.