The Secretary is further authorized and directed to conduct research, technical studies, and demonstrations relating to the mission and programs of the Farmers Home Administration and the national housing goals defined in section
1441 of this title. In connection with such activities, the Secretary shall seek to promote the construction of adequate farm and other rural housing, with particular attention to the housing needs of the elderly, handicapped, migrant and seasonal farmworkers, Indians and other identifiable groups with special needs. The Secretary shall conduct such activities for the purposes of stimulating construction and improving the architectural design and utility of dwellings and buildings. In carrying out this subsection, the Secretary may permit demonstrations involving innovative housing units and systems which do not meet existing published standards, rules, regulations, or policies if the Secretary finds that in so doing, the health and safety of the population of the area in which the demonstration is carried out will not be adversely affected, except that the aggregate expenditures for such demonstrations may not exceed $10,000,000 in any fiscal year.