The head of former President Donald Trump’s Secret Service detail notified him that some members of the crowd at his Jan. 6 “Stop the Steal” rally were carrying prohibited items, his driver testified to Congress. According to Politico, “The driver, who remains unidentified, drove Trump to and from his rally at the Ellipse on Jan. 6. After the rally, Trump’s supporters — riled up by his fervid speech — marched down the street, where Congress was attempting to certify the results of the 2020 election. The driver described Trump’s exchange that day with his lead Secret Service agent, Robert Engel…