@Kosetife , please provide info as to which country is the pension from . I agree that generally Social Security ( i.e. public pension ) is generally taxable ONLY in that country -- but it is for those countries with which US has a Tax treaty and Totalization agreement.
As far as NJ taxability, I am not familiar with that . However see this page from NJ DOR:
GIT-1 - Pensions and Annuities (nj.gov)
Hope this helps
