How does marijuana affect you?

I read an article on CNN.com called Fighting marijuana... or reality? 

Who is allowing people to hold position of this drug? 

          According to Mr. Frum's predication "half of the states may soon allow the sale of marijuana to almost anybody determined to buy it".  I disagree with what the states may soon allow.  I believe it is a bad idea for people to be allowed to have this drug in their position.  When under the influence of marijuana you don't act like yourself.  This drug is very harmful to your body and may cause you to do things you will regret.  Using this drug has caused many accidents so to prevent things from happening unexpectedly marijuana should be illegal in all of the states.  People should not be allowed to hold position of this drug.    

Why is this drug not becoming illegal in some states? 

          The risk of marijuana is very comparable to when drivers have a blood alcohol level of .05%.  To be arrested for a DUI the level must be at least a .08%.  When a person is under the influence of marijuana that means they would still be quote on quote "legal".          

How are people being affected? 

          In states where this drug is illegal people are going out of their way to find a way to buy marijuana.  Then, allowing themselves to be caught under the influence under it.  Smoking marijuana can also be very harmful to the human body and causes chronic muscle spasms that are known to be very painful.  Also, smoking marijuana can be very harmful to the user's lungs.      

When and where should this drug be allowed? 

          Marijuana can also have a positive effect.  I think that this drug should be allowed in hospitals and emergency rooms for the necessary needs.  In some cases marijuana can be very helpful up to the point of helping someone live.  Marijuana will always be a problem of the future because it is a plant and plants are the necessities of human living. 

Below is the URL of where I read this article.   http://www.cnn.com/2013/09/12/opinion/nathan-pot-legalization/index.html?hpt=us_mid