Indian parent giving durable power of Attorney to a son - US citizen

My both parents are very old and all their children (two sons and four sisters) are married and well settled, except my elder brother who lost everything due to his lavish lifestyle. He sold every thing of his share of ancestral properties such as village old house, land and his new own house too. Now he is financially abusing my old parents. Myself his (younger brother) is settled in USA for long time. Neither he is keeping my parents nor supporting them financially. Without knowledge of any other siblings, he is taking hight interest loan from money lenders by pledging my parents agriculture land. Recently I came to know about it. I plan spend more time with my parents in India. My parents are willing give me durable power of attorney to me who is at present citizen of USA. Can Indian parent give durable power of Attorney to a son who is US citizen to manage their ancestral property? Please help. Appreciate your suggestions/recommendation.