2001年10月4日，州长签署了1424号议会提案(Thomson-Yolo D) ，并将其写入律法中。该律法于2002年1月1日生效，AB1424修改了用于管理加州精神病患者非自愿治疗的 LPS 法规（Lanterman-Petris-Short Act）。

这是有关AB1424法案的总结：“Summary
AB 1424 is a new tool that ensures medical and psychiatric history will be considered in
the legal process. But it is not a panacea. The LPS Act remains badly out of date. We
now know that schizophrenia and manic-depressive illness, the most common forms of
severe mental illness, are diseases of the brain—just as are Parkinson’s and Alzheimer’s.
We now know that approximately 50% of individuals with these diseases have impaired
insight into their own illness. They do not realize they are sick and, therefore, often do
not accept treatment voluntarily. Because of this scientific knowledge, we now know
that some of the underlying tenets of the LPS Act are incorrect. To subject Californians
with severe mental illness to laws not based on scientific fact is preposterous. Passage of
AB 1424 is but the first step needed to right this wrong. ”

其中的5150条例是非自愿治疗三天，符合的三条标准其中一条就是：若此人对其自身造成危害。法庭通常将此标准诠释为对自身造成生命危险（亦即自杀）。

5250条例是有人因5150条款而遭强制留院，在界满72小时的时候，若此人仍符合以上三项标准的其中任何一项，则主治精神医师可以提出5250申请，（也就是“不超过十四天的密集精神治疗证明”）。依法当事人必须收到一份证明副本。