A bill to amend the Federal Law Enforcement Pay Reform Act of 1990 to adjust the percentage differentials payable to Federal law enforcement officers in certain high-cost areas, and for other purposes.

Amends the Federal Law Enforcement Pay Reform Act of 1990 to revise the special pay adjustments for (percentage differentials payable to) Federal law enforcement officers in specified consolidated metropolitan statistical areas. Includes Capitol Police as law enforcement officers under such Act.

Directs the Office of Personnel Management: (1) to study and report to Congress on the need for, and the potential benefits to be derived from, the establishment of a separate pay, evaluation, and promotion system for Federal law enforcement officers; (2) if it considers it to be appropriate, to implement a demonstration project to determine whether a separate system for such officers would result in improved Federal personnel management; and (3) to submit to Congress its evaluation of the system tested under the demonstration project and recommendations as to whether that system should be continued or extended to other Federal law enforcement officers.

Eliminates the limitation on the aggregate of basic pay and premium pay with respect to availability pay for Federal criminal investigators.