The Oversight Board is pushing Facebook to provide more information on its controversial “cross-check” system, following a report that the company has allowed celebrities, politicians and other public figures to break its rules.“In light of recent developments, we are looking into the degree to which Facebook has been fully forthcoming in its responses in relation to cross-check, including the practice of whitelisting,” the board said in a statement. “We expect to receive a briefing from Facebook in the coming days and will be reporting what we hear from this as part of our first release of quarterly transparency reports which we will publish in October.”The statement comes one week after The Wall Street Journal reported on internal memos that raised significant issues with the “cross check” system. Facebook has said the rules are meant to provide an extra lawyer of scrutiny to potential rule-breaking posts from high-profile accounts. But according to The WSJ, t