ly ▁comp lied ▁with ▁the ▁Com intern ' s ▁directive , ▁ren aming ▁the ▁Trade ▁Union ▁Education ▁League ▁as ▁the ▁Trade ▁Union ▁Unity ▁League . ▁F oster ▁and ▁the ▁Party ▁also ▁followed ▁the ▁line ▁by ▁den oun cing ▁social ▁dem ocr ats ▁as ▁" social ▁fasc ists " ▁and ▁attack ing ▁former ▁al lies ▁in ▁the ▁African - American ▁communities ▁as ▁b our ge ois ▁collabor ators . ▁ ▁Eclipse ▁and ▁return ▁to ▁power ▁ ▁F oster ▁began ▁to ▁lose ▁power ▁within ▁the ▁Party , ▁due ▁to ▁his ▁imprison ment ▁during ▁the ▁Party ' s ▁convention ▁in ▁ 1 9 3 0 ▁and ▁his ▁continu ing ▁differences ▁with ▁others ▁in ▁the ▁Party ▁over ▁trade ▁union ▁policies . ▁In ▁ 1 9 3 0 , ▁he ▁ran ▁for ▁Governor ▁of ▁New ▁York ▁on ▁the ▁Commun ist ▁ticket . ▁ ▁F oster ▁was ▁nominated ▁for ▁President ▁yet ▁again ▁in ▁ 1 9 3 2 , ▁but ▁he ▁suffered ▁a ▁heart ▁attack ▁on ▁the ▁campaign ▁trail ▁and ▁was ▁forced ▁to ▁step ▁down ▁as ▁leader ▁of ▁the ▁party ▁in ▁favor ▁of ▁Earl ▁Brow der . ▁Sent ▁to ▁the ▁Soviet ▁Union ▁for ▁treatment , ▁F oster ' s ▁condition ▁only ▁grew ▁worse . ▁A ▁period ▁followed ▁in ▁which ▁F oster ▁was ▁separated ▁from ▁political ▁activity . ▁ ▁F oster ▁returned ▁to ▁politics ▁late ▁in ▁ 1 9 3 5 , ▁but ▁was ▁est r anged ▁from ▁Brow der ▁and ▁those ▁who ▁had ▁ris en ▁to ▁power ▁in ▁his ▁absence . ▁While ▁the ▁Party ' s ▁trade ▁union ▁policies