AB678 is a bill introduced in the 2017-18 California state legislature to strengthen the state's Housing Accountability Act, which limits local municipalities ability to restrict housing development.
Sponsors: Raul Bocanegra (D - District 39, San Fernando Valley).
Summary from California Economic Roundtable: "Strengthens the Housing Accountability Act in various ways, including prohibition on local actions that make projects 'infeasible.'"
AB678 advocacy is led by by Brian Hanlon, cofounder of CARLA and Policy Director of YIMBY Action.
California legislature. AB 678 page (rarely works!).
Hanlon, Brian. Testimory in support of AB 678 on May 10, 2017 in the Committee on Local Government in the California Assembly. https://youtu.be/QmkNPYNB0Ok