By ISABELLE STANLEY DAILYMAIL.COM PUBLISHED: 10:53 EDT, 21 April 2024 | UPDATED: 21:08 EDT, 21 April 2024 Native American tribal leaders have issued an urgent plea for help as thousands of drug cartel gangsters flood their isolated lands and ‘rape and murder’ their people. The groups say that Mexican cartels take advantage of their sparsely populated reservations to traffic fentanyl and other drugs into the US as they do not have the police or funding to stop them. Testifying in Congress, President of the Fort Belknap Indian Community in Montana Jeffrey Stiffarm said: ‘We are fighting a losing battle. The cartels are winning, the drug dealers are winning.’ Stiffarm’s 652,000-acre Montana reservation has just nine police officers, meaning the gangs can operate with impunity, he said: ‘They know we’re short-staffed, underfunded, under-trained and outnumbered.’ The groups are calling for…