Which president rewarded his supporters with plum government jobs?

 President Andrew Jackson

Explanation:  

This practice was called the "spoils system."  The term "spoils system" was used by President Jackson's political opponents, who took a very negative view of his practice of rewarding political supporters with government jobs.  The origin of the term, however, came from one of Jackson's supporters.  In a speech in the Senate, defending Jackson and his administration, Senator William Marcy of New York said, "To the victors belong the spoils."

Jackson's opponents bristled at that thought and continued to speak against what became known as "the spoils system."

what are local authorities doing to fix the problem

explanation: