The decisions that companies make about how much to grow oil production are first and foremost going to be determined by market signals.”

Even presidential powers have their limits - and in some cases, Trump faces hurdles before his plans can become reality.

Executive orders are regularly used by incoming presidents to kick off their administrations. The orders - the most formal type of “executive actions,” which derive their power from Article II of the Constitution - are official statements from the president about how US federal agencies are to use their resources,