In other words, what these members of Congress are asking the nation's law enforcement chiefs to do is to violate their own state laws.

And what might those political purposes be?

The Michigan Medical Society - representing the state's physicians - is opposed to legislation that would do nothing more or less than ban the sale of electronic cigarettes to minors.

The randomized study provides a number of important benefits that can never be realized in a survey study. Most importantly, the RCT can equalize between study groups the known and unknown confounding variables that may lead to invalid study results.

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