What are the most popular careers in the US?

here In Canada Its Either The Trades Or A Degree in any type of Engineering, anything to do with oil and gas. I guess electrical or Plumbing are alright, but they are soon obsolete, Welding or Welding Inspection And Quality control is a good field, here in Canada University Enrollment is down and Community College and trade school's enrollment is through the roof do to the high demand. I know Welders and Inspectors in Alberta that are making close to half a million dollars a year