 Cohen opposes the castle doctrine, which allows citizens a broader legal defense for shooting others on their own property or their own workplace.Cohen was an unsuccessful candidate for the Democratic nomination for the seat in the US House of Representatives held by Joshua Eilberg in 1978.He actively campaigned in 2003 for the Democratic nomination for the Congressional seat being vacated by Joseph Hoeffel to run for the US Senate, but withdrew his candidacy in January 2004 when it had become clear that Allyson Schwartz had more support than he did.