"Tech, housing boom creates homeless crisis" -  That did not cause or exacerbate the problem but rather the policies of the USA selling our residential and housing to anyone and everyone in the world.  Cease selling US residential and housing to foreigners and the problem would not be at crisis levels.  Think this is a whacko idea, average US citizens canʻt waltz in and buy homes (or not without major restrictions) in the majority of countries worldwide i.e. China, Thailand, Japan, Russia, Laos, Tahiti, Iran,  Egypt, Israel, and the list goes on.