Biden would be better keep quiet on all things Afghan after his disastrous moonlight flit.
How many Afghan workers that assisted the USA are still abandoned there?
This 'ongoing investigation' excuse is getting very old and seems to be used every time anything like this comes up. The Department of Ongoing Investigations is either inefficient or corrupted. It is useless except to a favoured few and way past its sell-by date.
Back to topic, it seems that any "double-standards" have been the two-tier protections by the FBI and DOJ: high-level for the Bidens and zero for the rest.