No signing ceremony listed on Trump’s Sunday agenda US President Donald Trump has suggested that a memorandum of understanding between the United States and Iran could be signed virtually, but his public schedule for Sunday contains no reference to a signing ceremony. Trump has described the proposed memorandum as a major diplomatic breakthrough that would prevent Iran from obtaining a nuclear weapon, arguing that Tehran is no longer interested in pursuing one. The president has also contrasted the prospective agreement with the 2015 Joint Comprehensive Plan of Action negotiated under former President Barack Obama, saying the new arrangement would be stronger than the accord from which he withdrew the United States during his first term in office.