Iowa:

Iowa Code 607A.5 (1994) permits a mother who is breastfeeding and who is responsible for the daily care of the child and is not regularly employed to be excused from serving on a jury.

Iowa Code 135.30A (2000) provides that a woman may breastfeed the woman's own child in any public place where the woman's presence is otherwise authorized.

National Laws:

All 50 states have laws pertaining to breastfeeding. A summary of thee legislation by state can be found at:

https://www.ncsl.org/research/health/breastfeeding-state-laws.aspx