When you took office, you swore an oath:
I do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same
Any one who proposes legislation that attempts to overturn or limit the constitution is in violation of their oath and they must be removed from office. Their act must be considered an act of Treason against the United States of America and should be prosecuted as such.