Eh, resources outside of land are scarce.

Look at lumber, rare earth minerals, conductors, specific chips, etc. You want double the population in 10 years to appease your religious beliefs? Get ready for $3000 GPUs, $100 plywood sheets, phones spiking to $1500 MSRP, etc

Then there's the human element. People can be idiots, therefore they'll brawl over chicken sandwiches and make toilet paper as rare as a PS5. No doubt with twice more people we'll see this more and more for anything determined to be "necessary"

There's a lot of other indicators. In most public school systems, student teacher ratio is already awful (50-1 isn't unheard of) the prisons are already overpopulated, the average city's mobile network gets congested everyday just like its traffic locks up twice a day

There is the age old question every real conservative will ask. Where's the money coming from? How will you fix the housing market? Healthcare? Infrastructure?

Unless NESARA/GESARA is fully real..then you have to population control somehow, at least until then.

if we could get the border under control and develop birth control with less side effects, maybe we could handle population spikes from abortion bans