Mental health issues are universal. Americans aren't anymore genetically prone to having mental health issues than other countries. The reason for America's rampant homelessness is because of the lack of social safety nets, inaccessible healthcare, nimby-ism, and unlivable minimum wages.

The idea that homelessness is primarily a symptom of mental health issues is perpetuated to push the blame onto the homeless and absolve the exploitative upper class of responsibility. People aren't homeless because they have mental health issues, they have mental health issues because of living with the unending threat of being one medical emergency away from homelessness.