Former President Donald Trump arrived Tuesday afternoon at the federal courthouse in Miami to formally surrender to authorities ahead of his court appearance on charges accusing him of illegally hoarding classified documents at his Mar-a-Lago estate in Florida. He was expected to face a magistrate judge, kickstarting a legal process that will unfold at the height of the 2024 presidential campaign and carry profound consequences not only for his political future but more urgently for his own personal liberty. Four black SUVs entered the garage beneath the Miami courthouse, followed by police officers, ahead of his scheduled 3 p.m. appearance. A fifth black SUV remained outside. Security remained tight outside the building but there were no signs of significant disruptions. Trump approached his arraignment with characteristic bravado, insisting as he has through years of legal woes that he has done nothing wrong and was being persecuted for political purposes. But the gravity of the moment was unmistakable as he answers to 37 felony counts that accuse him of willfully retaining classified records that prosecutors say could have jeopardized national security if exposed, then trying to hide them from investigators who demanded them back. The case is laden with political implications for the 76-year-old Trump, who currently holds the dominant spot in the early days of the 2024 Republican presidential primary. But it also poses profound legal impact given the prospect of a years-long prison sentence.