American presidents take on a lot of problems. President Franklin Roosevelt had to deal with the economic collapse of the 1930s (the Great Depression); more recently, President George W. Bush had to deal not only with the issue of terrorism, but also took on the shortcomings of American education by pushing Congress to pass the No Child Left Behind Act.

President Obama has been very ambitious as well, with his efforts to deal with the national economy.  More recently he has taken on a new challenge;

Is it appropriate for an American president to deal with matters like childhood obesity, or should he concentrate with the tasks associate with his Constitutional duties (chief administrator, commander-in-chief of the military, chief foreign policy maker, etc.)?

Write a 3-paragraph essay on this topic. 

The first paragraph will describe the President's Constitutional powers.

The second paragraph will describe the problem of childhood obesity (in national terms; don't simply say that childhood obesity means that kids are too fat).

The third paragraph will explain which of the President's Constitutional powers gives him the authority to take on childhood obesity.