It’s not the US President’s call.
It’s the call of those who had citizens on the plane — the Netherlands, Australia, Malaysia, Britain, Indonesia ...
That’s why their Prime Ministers of those countries are taking the lead and sending troops to get their citizens back out of the grubby hands of the Russian-backed rebels.
The only US citizen on the plane was a dual citizen with the Netherlands.
Lastly, we are the leaders of the Free World. We cannot depend on the humanity of the Russians or the Russian-backed thugs in Ukraine to secure the site or preserve evidence or to recover remains. We lead or no one does.
Has it been so long since we had an actual government that you don't remember?