The most important power of the American president is not the nuclear weapons he controls.

The most important power of the President of the United States is not the nuclear weapons he controls, but every word he says, and the whole world listens carefully, so the president's credibility is very important. Because once the outside world no longer trusts him, his political life is over.

The recent series of events is seriously undermining confidence in Mr Obama, who has struggled to make other reforms at home and has seriously undermined his reputation.

Obama didn't seem to realize anything was wrong until the online insurance trading platform was officially launched on October 1. On September 26, he told voters that the platform would be simple and easy to use, just like buying a TV on Amazon. However, this is not the case, millions of of people try to register, but almost a disaster, a large number of users to the site into a crash, a few successful registration. This site is obviously not ready enough to rush online, the results can be imagined.

Although health care is the most important reform of Mr Obama's presidency, no one is really responsible for it, and the contractor has warned the government that there are problems in the site before the site is online, but the information has not been delivered to the Oval Office in time.

The 2010 health reform, though a big controversy, is generally the right way to get health insurance for millions of of uninsured Americans. But Mr Obama's disdain for the details of the reforms and his contempt for business rules eventually led to a dead end to reform. For health reform, he has made various promises, but has repeatedly broken his promise. Many Americans are already questioning his integrity.

Former President Bill Clinton said Obama: "All the hard bones Obama can handle," but he did not want to do those simple things.