Is mercy killing legal in US?

From experience of when my mother was dying, yes they give you as much morphine as you want. The idea is not to kill the person but to assure they are comfortable. In hospice my mother was still cared for, fed, given her insulin, etc. One thing I found silly was that they gave her sugar free cough drops. Like what's the difference if she's going to die anyway? There were just no measures beyond that to extend her life.

i am so shocked...i never bear in mind that said mercy killing...is it not considered as murder?even it is legel anywhere in the world but it is still a mortal sin..if you're doing this, you have trespassed one of the ten commandments of God...