I see a G-man informing the local constabulary by phone that he is assuming jurisdiction under an executive order, displaying his badge at the hospice and authorizing a medical professional who hasn't wiped his posterior with the Hippocratic oath to direct care.
You're probably right. But I also would see him sending over a numerous escort of heavily armed FBI plainclothes mem with sunglasses and overcoats to ensure compliance and non-interference by police,lawyers,thugs and Michael Schiavo.