https://www.reuters.com/article/us-trump-facebook/trump-still-banned-from-facebook-but-board-demands-company-review-idUSKBN2CM0W4 >(Reuters) -Facebook Inc's oversight board on Wednesday upheld the company's suspension of former U.S. President Donald Trump but gave the company six months to determine a “proportionate response” going forward, a verdict that may chart how social media will treat rule-breaking world leaders in the future.