Horse tackle reins, no whip.
The truth at this point will not matter. At minimum the Agent will have to write memo explaining that it was not a whip and give a detailed account of the arrest and everything leading up to it. Then then patrol which never has the Agents backs will look for any possible policy violation no matter how small so that they can discipline the Agent. There are some many policies that an agent can unknowingly violate so I won’t be surprised if they find a violation. It is even against policy to buy a coffee on duty, of course everyone ignores that policy, but it is there if they want to find a reason to discipline an agent.
They should give the Border Control stun guns.We have no idea what diseases these people carry. Bag em and tag em