The US Court of Appeals for the District of Columbia Circuit heard oral arguments in a case brought forward by groups – including the Environmental Health Trust – against the US Federal Communications Commission (FCC) over standards it used to contend that there is no scientific evidence to establish a causal link between wireless device use and illness. According to a report, the case before the court does not ask a ruling to be made on whether 5G technology is safe. Rather, it asks whether the data the FCC used to support its position should be considered valid 24 years later. The FCC noted in a brief that it initiated an inquiry into its radiofrequency exposure limits in 2013 and concluded that they are safe and appropriate. It also stated that the US Food and Drug Administration recommended no changes to the limits.