CDC says it's outright banned.

https://www.cdc.gov/biomonitoring/DDT_FactSheet.html

> The United States banned the use of DDT in 1972, but some countries still use the chemical. DDT has also been used in the past for the treatment of lice. It is still in use outside the United States for the control of mosquitoes that spread malaria.

EPA says its use was discontinued (read: cancelled)

https://www.epa.gov/ingredients-used-pesticide-products/ddt-...

> In 1972, EPA issued a cancellation order for DDT based on its adverse environmental effects, such as those to wildlife, as well as its potential human health risks.