It was illegal to export American crude oil for 40 years. That lasted until early this year: http://money.cnn.com/2016/01/29/investing/us-oil-exports-begin/ htt

It was illegal to export American crude oil for 40 years. That lasted until early this year: http://money.cnn.com/2016/01/29/investing/us-oil-exports-begin/ http://money.cnn.com/2016/01/29/investing/us-oil-exports-beg...