@jowie2monte - if he made $3700 and lived at home and you provided more than 50% of his support, he is your dependent.
if he filed and did NOT check the box stating he CAN be claimed by others - he needs to amend his return. You may not receive the 3rd stimulus (he will fraudulently) and you won't be eligible to get the up to $500 tax credit for others
list him as your dependent and paper file; suggest he include his amended return in the same envelope with a cover letter explaining what is going on.
