- The President can be removed from office by Congress at any time, for virtually any reason (the phrase "high crimes and misdemeanors" in the Constitution is left entirely up to Congress to interpret - the Supreme Court has consistently refused to weigh in on what this means).
- Congress, by getting a 2/3 majority, can pass any law they want, at any time, and there's nothing the President can do about it.
- Congress can effectively end any war by cutting off funding for the fighting of it - this is essentially what they did during the Vietnam War.
As far as turning the U.S. into a police state...it might be helpful to read a description in Parade Magazine of daily life in North Korea (published in Feb 2005):
- The Ministry of People’s Security places spies in workplaces and neighborhoods to inform on anyone who criticizes the regime, even at home.
- All radios and TV sets are fixed to receive only government stations.
- Disloyalty to Kim Jong Il and his late father, Kim Il Sung, is a punishable crime: Offenses include allowing pictures of either leader to gather dust or be torn or folded.
- The population is divided into “loyalty groups.” One-third belong to the “hostile class.” These people receive the worst jobs and housing and may not live in the capital, Pyongyang.
- Below the hostiles are the estimated 250,000 held in prison camps, some for crimes allegedly committed by relatives.
- Executions often are performed in public.