https://en.wikipedia.org/wiki/UNESCO#Israel,_Palestine,_and_the_United_States

October 12, 2017 press statement from the US State Department: https://web.archive.org/web/20190408053146/https://www.state.gov/r/pa/prs/ps/2017/10/274748.htm

October 31, 2011 reporting about the US suspending payment of its dues after Palestine was admitted as a member: https://web.archive.org/web/20200226162636/https://www.reuters.com/article/us-palestinians-unesco-usa-funding/u-s-stops-unesco-funding-over-palestinian-vote-idUSTRE79U5ED20111031