Yes it has but not by whom you think. The enviro lobby and now our government artificially keeps the price of oil high so as to justify their throwing money down the rat hole of "green energy". The free nations of the world with proven oil reserves are being stymied and hamstrung from bringing that oil to market. The less than free countries of the world are under no such restraints.

Which bring us to Brazil. A "free" country is developing a huge oil reserve off shore. Funded and subsidized by the US Taxpayer. Did you know that George Soros has a huge investment in Petrobras? Things that make you go hmmmm.

U.S. Loan to Brazilian Oil Company Riles Conservatives in Favor of Offshore Drilling - FoxNews.com