When considering the powers of different presidents, you need to consider their responsibilities and what power they actually have when it comes to making decisions. Both the Iranian and American presidents have two different presidential powers, formal and informal. Formal powers are those that are written in the constitution and must be upheld by whoever comes to power, for example both presidents can sign treaties with foreign countries. Informal power is not explicitly written in the constitution (1), but is exercised by the president, for example being persuasive, this is a power they have to use because this is how they will get the presidential role, persuading the public and making international treaties they have need to use power The American president, currently Barack Obama, has executive powers over the federal government and has the power to appoint ambassadors, the cabinet, Supreme Court justices, federal court judges and has control of the armed forces . In legislation the president himself is only part of the process, at the end of it, when it comes to registering it (3), he has the power to "forget about it" because he has the power to leave it on his desk for 10 days and then submit it again to the trial. This shows that the American president has the power to “delay” the approval of a law. Compared to the Iranian president, currently Hassan Rouhani, the American president has more formal powers because, although Rouhani heads the executive branch, the Supreme Leader sets overall policies and oversees everything the president does. In contrast, Iran's Supreme Leader appoints key figures in the political system and not the president. (2). This, however, does not mean that the American president can do what he wants; The Senate must approve presidential nominations and approve treaties, the Senate must also approve the nominations of all supreme leaders. The president of the United States can enter into executive agreements (equivalent to a treaty) and meet with other world leaders without Senate approval. He also has powers that allow him to gain control in times of emergency, without congressional interference. Abraham Lincoln used it during the Civil War because he needed to make sure he could spend all the money he needed to win the war. The Iranian president can also do this, he can declare a state of emergency that suspends all laws and can promulgate a state of martial law. However, so far no president has actually used this power. However, the president of Iran cannot make any decisions without getting approval because he is not the highest ranking official in the Iranian political system, the Supreme Leader is, and must approve all treaties and policies that the president desires Do. Informal and formal powers are not the only way the president's power and responsibility can be impeded