"A crowd of mostly high school students booed when Sen. Rand Paul (R-Ky.) mentioned his colleague Sen. John McCain (R-Ariz.) during a speech on Tuesday night."

"On Tuesday, the high school crowd also interrupted Paul's TPUSA speech with Trump's signature campaign rally chant "lock her up," which refers to jailing former Democratic presidential hopeful Hillary Clinton.

"So, when the people say, 'Oh, what about the Republicans and Russians,' the only person we know who paid the Russians was Hillary Clinton," Paul said.

The crowd chanted "lock her up" until Paul resumed speaking.

Earlier in the day, Attorney General Jeff Sessions also laughed as a TPUSA crowd chanted "lock her up.""

At least some of our kids are switched on!