Stephen Breyer,
Los Angeles County v. Humphries…
“ The language of §1983 read in light of Monell's understanding of the legislative history explains why claims for prospective relief, like claims for money damages, fall within the scope of the "policy or custom" requirement. Nothing in the text of §1983 suggests that the causation requirement contained in the statute should change with the form of relief sought. In fact, the text suggests the opposite when it provides that a person who meets §1983's page 8, slip opinion elements "shall be liable...in an action at law, suit in equity, or other proper proceeding for redress." ”
