Four young children were found in a hot car in Lancaster, Pennsylvania, according to police. Their parents are charged with leaving them there for at least 20 minutes.None of the children are older than 3-years-old and are now in the care of social workers.Just this week, a new law in Pennsylvania went into effect to protect children left in hot cars. The law protects Good Samaritans from lawsuits if they break into a car to free a child they believe is in danger. A similar bill passed last year allowing police to enter a car to save an animal. Last year, 51 children died from heatstroke.