America detaining university lecturer — that's reportedly in order (3,5)
I believe the answer is:
'that's reportedly in order' is the definition.
(the usual means following the usual order)
'america detaining university lecturer' is the wordplay.
'america' becomes 'the USA' (the United States of America).
'detaining' indicates putting letters inside.
'university' becomes 'U' (abbreviation for university).
'lecturer' becomes 'l' (abbreviation for lecturer).
'theusa' going around 'u' is 'theusua'.
I've seen this clue in The Guardian.
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