No local governmental unit shall require, as a condition of employment, that any currently employed or prospective law enforcement officer reside within any jurisdiction.
If a local governmental unit has a residency rule or requirement for law enforcement officers that violates this section in effect on or before the effective date of this section, such residency rule or requirement is null and unenforceable.
A local governmental unit may impose a residency rule or requirement on law enforcement officers no more restrictive than requiring such personnel to reside within a one-hour response time.