[quote=@Lord Wraith]
I assume due to the recent emergence of Metahumans, local law enforcement agencies wouldn't have access or be aware of ability suppression restraints or the like? 
[/quote]

Local? Likely no. Though I imagine that some technologically empowered places like Metropolis might. It is the "city of tomorrow" after all, and I assume Lex would want to outfit people against the scourge of aliens as soon as humanly possible.