Coach,
Follow the link at the bottom of the snippet you posted. Looks like someone is picking and choosing just a tiny bit of the information to support misinformation and lies.
The information on the CDC linked page is incredibly more comprehensive.
Invermectin is recommended for parasites. This has nothing to do with recommending it for COVID-19, which they are not doing.
Would you prefer immigrants and refugees from countries known to have issues with parasites such as Bot Flies not be treated before entering the U.S. Look up Bot Flies in humans.
Here's just one example of what you'll find:
w.cdc.gov/immigrantrefugeehealth/guidelines/overseas-guidelines.html