His additional responsibilities/powers do not alter the fact that when it comes to actually deciding cases, his is one vote among 9 equal ones.
As for "lifetime, exclusive power", I think that an implicit qualifier of "under the normal course of affairs" is understood. Of course there are possibilities such as impeachment (yes, the members of the Supreme Court CAN be impeached), voluntary retirement, and change of laws. However there is no particular reason to expect it not to be for his lifetime.
As for "lifetime, exclusive power", I think that an implicit qualifier of "under the normal course of affairs" is understood. Of course there are possibilities such as impeachment (yes, the members of the Supreme Court CAN be impeached), voluntary retirement, and change of laws. However there is no particular reason to expect it not to be for his lifetime.