Final answer:
The IRS declared breast pumps and breast-feeding supplies tax deductible in 2011, recognizing their health benefits and providing financial support for nursing mothers.
Step-by-step explanation:
The Internal Revenue Service (IRS) announced in 2011 that breast pumps and other breast-feeding supplies were tax deductible as medical expenses. This decision acknowledged the health benefits of breastfeeding for both mothers and infants and helped to support nursing mothers by defraying some of the costs associated with breast pumps and related supplies.