Big week for healthcare
You can see the Democrats' adverts already if he does ever stand - though it seems tough that a walk in the woods can torpedo an entire presidential bid.
Meanwhile this is a big week for the future of American healthcare and the questions the president has to answer are set out here in a piece that is hostile but fair I think in pointing out the downsides of the British and Canadian systems.
On the other hand, the US system is grotesquely unfair.
The honest answer surely is that there is a price to pay for fairness - care for the richest Americans would, in the future, be curtailed.