Any other federal legislation that impacts human services other than "Affordable care act passed by congress in 2010 and Food and Nutrition Act

Any other federal legislation that impacts human services other than "Affordable care act passed by congress in 2010 and Food and Nutrition Act 2008". 

Which one concerning legalizing marijuana? I just need one more example. You can just provide me with a link where I can find this kind of information. Thank you