President Donald Trump is breaking a 40-year tradition.<br />NBC News reports he will not hold a ceremony at the White House for the unveiling of former President Barack Obama's portrait.<br />The ceremony was an honored tradition by presidents from both parties.<br />Trump and Obama have an extraordinarily contentious relationship.<br />Business Insider reports their relationship hit a new low in recent days.<br />Pres. Trump has made accusations his predecessor committed an unspecified crime.
