Starting Monday, California becomes the first state to cover health care for all income-eligible people regardless of their age or immigration status. In 2016 California opened up Medi-Cal to undocumented children, then to young adults in 2020, and then to adults 50 and older in 2022. Prior to this, undocumented adults ages 26 to 49 had to rely on restricted-scope Medi-Cal, which only covers people experiencing a life-threatening emergency or giving birth. The state will automatically upgrade those people to full-scope Medi-Cal.