I have durable power of attorney for my father. Every decision I try to make is met with extreme opposition from my siblings.

It's best to have every detail of everything you do meticulously in order. As POA you just set yourself up to be sued if you become secretive to siblings. Remember it's relatively easy for them to put efforts together to hire an attorney, and then you will be required to prove that you did things on the up and up. If you did, you have no worries...

I understand what you are saying the exact situation is that both parents were living near me and I was the primary caretaker as far as assisting them with dr's appts, grocery shopping, etc.  Mom took care of the bills and dad basically did nothing except monitor his investments and donate to different charities.  Mom passed in March and dad's mental state went downhill fast and I got a letter from his doctor stating that he is not mentally capable of making any financial, medical or legal decisions on his own.  Since I am by myself, up in age and have my own medical issues I agreed that dad should move closer to my younger sister who has more backup with her immediate family, my brother and his kids are closer to her as well.  Waiting to move into assisted living he has been living with her in her house and I have been reimbursing his living expenses.  I am appalled at what she has been submitting for food reimbursement but I haven't said anything because he is not paying for electric, water, internet, etc. And she is doing his laundry, cooking meals, etc.  Throughout this period of time both she and my brother has tried to discredit me with dad's attorneys and his investment manager trying to find some basis to overturn the POA, even trying to accuse me of co-oercing my parents into naming me POA and executor and alluding that neither parent was cared for properly while living here and that mom's death was my fault. Fortunately both of these people know me and have told my siblings that they will not get involved with family disagreements. It's quite the opposite in that my siblings don't seem to have an issue with trying to spend my father's money on things he doesn't need and have tried to buy things and send me the receipt for reimbursement without consulting me. My brother will send me emails, for example, stating that dad's car tags have expired when they haven't.  I have tried to explain to him and have even sent him documentation showing they haven't but to no avail and I have also explained to him now that dad is taking up permanent residence in Florida that all that has to be transferred.  Both siblings have proceeded to send me emails that are abusive, vindictive, cruel bringing up things from 40 years ago, telling me that my father hates me and wants nothing to do with me.  Very hateful and hurtful words.  I send a copy of the bank statement to my brother with everything identified so as to be transparent.  I have done everything in my power to work with them but the emotional abuse I'm taking for no reason goes beyond what anyone should have to deal with.  So the reason for my questions were because it is getting to the point where I do not want any interaction with them and just want to handle the job that my father gave to me.  I hope they do take me to court because with the documentation that I have accumulated they look like the ones who are not doing what is best for our father.

Exacted right on siblings "you trust". If I handed duties over to my wealthy sister and her husband, they would stay at the Four Seasons, dine as they normally do at expensive restaurants ordering $500 bottles of wine and list those expenses as necessary to helping my mother - while I starve myself and skimp while doing all the work to help her....