When andrew jackson famously remarked, "john marshall has made his decision. now let him enforce it," he was referring to

 The correct answer is :  He was referring to the inability of the court to enforce its decisions outside the court.

Explanation:  The state of Georgia had jurisdictional problems with the Cherokee that ended with the decision of the Supreme Court, where Judge John Marshall, a court representative, said that Georgia could not impose its laws on the Cherokee, that was when Jackson pronounced those sentences and took advantage the crisis in Georgia to make a deal with the Cherokee chiefs to move.

both the house and senate must approve the conference report.   after it is approved by both on an identical from, it will be sent to the president.   if the president approves it, it will become law.