Police arrested the men after it emerged a significant amount of horse meat containing the painkiller "bute" could have been entering the food chain for some time.
Authorities in Britain and France are trying to trace the carcasses of six horses contaminated with bute - which were slaughtered in a UK abattoir and may have entered the human food chain across the Channel.
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The Hollywood actor and environmental campaigner met the president-elect to discuss the economic advantage of green policies.
The Pirates of the Caribbean star brought in just $2.80 (£2.21) at the box office for every dollar he was paid for his last three films.
Junk food advertising is to be banned across all children's media - including online and social - in a bid to tackle childhood obesity.