Reform U.K. launched an internal investigation after Channel 4 News aired undercover footage appearing to show senior aides James Orr and Dan Jukes discussing how donations linked to a purported wealthy American could be arranged. Both men have stepped down pending the inquiry and deny wrongdoing. Nigel Farage said he was campaigning and "frankly wasn't listening" during the conversation, while insisting the party had accepted no improper money. British law defines a permissible political-party donor as a U.K.-registered voter or a company; in the investigation's scenario, the purported donor's son qualified but his father did not. Farage and the aides accused the investigation of entrapment, while Orr and Jukes said they would cooperate with the internal probe.