In March 2015, 47 Republican senators released an open letter to the Iranian government regarding President Barack Obama's attempts to broker a nuclear arms agreement between Iran and six major powers (P5+1). The letter warns Iran of the limitations of President Obama's term in office and constitutional powers and notes that anything done without the advice and consent of the Senate could be undone by the next President. A petition on the White House's We The People website requesting that the Obama administration prosecute the 47 senators under the Logan Act accumulated signatures from over 320,200 people.