Source text: Nigel Farage, leader of the UK Reform Party, is under investigation by the UK Parliamentary Commissioner for Standards for allegedly failing to declare a £5 million ($6.7 million) donation from Christopher Harborne, a Tether investor. Harborne, who owns a 12% stake in Tether, reportedly made the donation for Farage's personal security before his 2024 candidacy announcement. Farage claims the donation was personal and not subject to parliamentary reporting requirements. The investigation focuses on whether Farage breached the House of Commons Code of Conduct, which mandates MPs to register benefits received within 12 months prior to their election. Potential penalties for violations include an apology, suspension, or expulsion from Parliament. Target language code: pt Translation instructions: This is the news article content. Please maintain the original meaning.