Not later than 1 year after November 25, 2002, the Secretary shall develop and submit to Congress a plan for consolidating and co-locating—

(1) any regional offices or field offices of agencies that are transferred to the Department under this chapter, if such officers ¹ are located in the same municipality; and

(2) portions of regional and field offices of other Federal agencies, to the extent such offices perform functions that are transferred to the Secretary under this chapter.