Trumpdate: Is the US President above the law?

It seems increasingly likely that at some point the question will be asked - is the President of the United States above the law?

What would happen if Robert Mueller decided to involve the US President directly in his investigation?

I asked US law expert Professor Sandeep Gopalan, from Deakin University.

This is a Trumpdate - your regular update on all things to do with the investigation.

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