I read it is “voluntary.”
Imagine what they would do to you if you don’t “volunteer” to have the house visit. They’d take your baby away from you post haste because CLEARLY you don’t have the best interest of the baby at heart.
GMTA
They won't need a warrant. They will ask to come in -- either you let them in, or you turn them away. Your choice.
BUT if you turn them away, then you MUST be sufferimg from post-partum depression, and Child Services will show up real soon to forcibly remove your child and put that child in foster care.