What is the US experience of federalism?

If someone drinks a spiked beverage without knowing and later gets arrested for DUI are they liable? Can an illegal alien get a green card after deportation if he has a permanent residentwife and 2 us citizen kids? If a parent has demanding and stressful job it may affect the way the parents interacts with their children at home and this may have a negative effect on the child. this is an example of bronfenbrenn? What does the sign ''No Soliciting'' mean Can you distribute religious tracts in Maryland where there are no soliciting signs? What are the Dennis Lim law notes? What can and can't an employer ask you to do regarding appearance. See first answer for details? Law of diminishing returns? What was the position of South Carolina leaders at the constitutional convention in 1787? Who makes canon laws? Who keeps the wedding band and engagement ring after a break up? Why is it illegal for employers to ask about your past medical history? What is money paid out on settlement of a divorce? What is the specific or most common punishment for people who commit domestic violence? Does the constitution gives the government unlimited power? What qualification for holding any public office is foridden in the constitution? What do Harvard look for? Does the Good Samaritan Law apply if a medical Assistant orders medication for a patient who has taken the medication before but dies? Can you drive a motorcycle in Maine with a mass permit? Does sleep deprivation cause sickness? What is the correct order for moving into traffic?