Population density is misleading because it's usually calculated based on total land area, total private land area, total resdential build up etc.
Overall the US is in an odd position where tha large cities are too populated and the suburban metropolitan areas tend to be considerably less dense due to primarily single family housing over fairly large land plots.
Combine that with NIMBY mentality and the overall geographic scale and you don't get the best environment for rapidly deploying infrastructure.
Overall the US is in an odd position where tha large cities are too populated and the suburban metropolitan areas tend to be considerably less dense due to primarily single family housing over fairly large land plots. Combine that with NIMBY mentality and the overall geographic scale and you don't get the best environment for rapidly deploying infrastructure.