McKinsey hiring is already on the way to slow down in some geographic regions (I don't know US specifically however) - but I definitely expect that.
Work already is remote to a large extent - many clients blocked all McKinsey consultants (and other external people) from their premises, and it will most likely increase in the next few weeks.
As long as uncertainty is very high, I expect recruiting will slow down significantly more; once it's a clear downward trend and uncertainty is reduced, also consulting projects will start to increase again (think of cost-cutting and restructuring). However, during recessions in general it's getting harder to get job offers....
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