Personal liberty laws
（重定向自Personal Liberty Law）
The personal liberty laws were laws passed by several U.S. states in the North to counter the Fugitive Slave Acts of 1793 and 1850. Different laws did this in different ways, including allowing jury trials for escaped slaves and forbidding state authorities from cooperating in their capture and return. States with personal liberty laws included Connecticut, Massachusetts, Michigan, Maine, New Hampshire, Ohio, Pennsylvania, Wisconsin, and Vermont.