Note that this technically covers "having been in Europe in the last 14 days", not merely "coming directly from Europe".
Enforcement of the latter is much easier, of course, and I'm sure some people will manage to sneak through by lying or customs not asking.
Also note that it's the Schengen zone, thus excluding both UK and Ireland.
Finally, it only excludes foreign nationals. US citizens should be able to return, but there's nothing stopping them from being tested and/or quarantined on return.
Note that this technically covers "having been in Europe in the last 14 days", not merely "coming directly from Europe". Enforcement of the latter is much easier, of course, and I'm sure some people will manage to sneak through by lying or customs not asking.
Also note that it's the Schengen zone, thus excluding both UK and Ireland.
Finally, it only excludes foreign nationals. US citizens should be able to return, but there's nothing stopping them from being tested and/or quarantined on return.