Usher and Scooter Braun had nothing to say as they arrived back on U.S. soil after spending time with Justin Bieber.
Several photogs peppered both -- especially Usher -- with questions about what is loosely being described as an "intervention."
Not a word from either.
Based on what we know ... Bieber's not down with either rehab or therapy.
Mum On Biebs
1/28/2014 1:05 PM PST BY TMZ STAFF
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