It's hard to imagine how they could refuse him entry.
"Give us your passwords or we won't let you go."
"Am I under arrest?"
"Am I free to go?"
"Do you know what it means to be under arrest?"
"You're not under arrest, you're being detained."
"Oh, I see, a different word is being used. That makes it okay then."
"Why am I being detained?"
"We can't tell you."
"Can I watch while you use my passwords?"
"What if you insert sensitive material on my computer?"
"WHAT KIND OF MATERAL?!!!"
"I don't know, the stuff you're looking for?"
"WHAT DO YOU THINK WE'RE LOOKING FOR??"
"Can I have a lawyer?"
"I refuse to talk further."
"You must talk, else you'll make it VERY HARD ON YOURSELF."
"Don't I have the right to remain silent or something?"
"I TOLD YOU. YOU ARE NOT UNDER ARREST. YOU DO NOT GET A LAWYER, and YOU HAVE NO RIGHT TO REMAIN SILENT."
"Ok, here's my political life on file, feel free to screw it all up. Can I have your name to sue you if you leak sensitive information?"
"It's a good thing you're letting me go after examining my data... my constituents have potholes which need filling!"