Final answer:
Lack of breastfeeding support can be a potential barrier to rooming-in for new mothers and infants.
Step-by-step explanation:
A potential barrier to rooming-in for new mothers and infants could be lack of breastfeeding support. Breastfeeding is an important aspect of newborn care and bonding, and if mothers don't have access to proper support and guidance, it can be challenging for them to establish and maintain breastfeeding. Without breastfeeding support, mothers may be more likely to opt for formula feeding or face difficulties in producing enough milk, which can impact the overall rooming-in experience.