Administrative assistant

What does Administrative assistant mean in American Law?

The definition of Administrative assistant in the law of the United States, as defined by the lexicographer Arthur Leff in his legal dictionary is:

Anyone who assists someone in administering something could be so called. But the most important current context is Congressional, where “administrative assistant” refers to the ordinarily highest ranking member (though sometimes the legislative assistant is of equal rank) of the staff of a member of Congress. Thus, “the A.A.,” as the administrative assistant is usually called, is the equivalent of “head of office” or “chief of staff,” and frequently a person of substantial influence and power.