After notice and public hearing, a political subdivision may find that, because of a protected action, a low-income and moderate-income rental housing emergency exists in all or part of its jurisdiction. The political subdivision shall make findings as to: the nature and incidence of protected actions; the resulting hardship to and displacement of tenants; and the scarcity of low-income and moderate-income rental housing. Except as provided in paragraph (2) of this subsection, on finding that there is an emergency under this section, a political subdivision may enact a law, ordinance, or regulation to: grant to a designated household a right to an extended lease for a period in addition to that granted under § 7-214 of this subtitle; or extend any other provision of this subtitle concerning extended leases. A political subdivision may not require that: more than 20% of assisted units in an assisted project be set aside for extended leases for designated households; or the term of an extended lease for any household made a designated household by the political subdivision exceed 3 years. The political subdivision may require that the notice required under § 7-216(a)(3) of this subtitle be modified to disclose the effects of any actions taken under this section. Within 10 days after enacting a law, ordinance, or regulation in accordance with this section, a political subdivision shall send a copy to the Secretary of State and the Secretary of Housing and Community Development.