Hi All,
Returning to FT after a sabbatical

Not really sure where to post this, but this seems to be as good a place as any.
I'm currently studying law and have managed to secure a fantastic work experience opportunity over in the US (TX) this summer. Do I need a different Visa to be able to do this? I haven't been able to find a definitive answer. I already have a valid ESTA and as far as far as I'm aware, it's unpaid (not sure if this is relevant?).
Thanks in advance for your advice!