Morrison's comments came as funds raised online by an Australian charity to pay for the infant's medical care rose above $180,000 after a flood of international goodwill for the infant's plight spurred donations from more than 4,500 people.
The boy, Gammy, and a twin sister were born to Thai woman Pattaramon Chanbua in December after she was reportedly paid Aus$16,000 (US$14,900) to be a surrogate.
An unnamed Australian couple took the sister, who was healthy, but left Gammy behind, according to media reports.
AFP