Sen. Tom Cotton said the US, which has the highest incarceration rate in the world, has an 'under incarceration problem'

Sen. Tom Cotton, R-Ark., interrupts a fellow senator during a confirmation hearing of the Senate Intelligence Committee for CIA nominee Gina Haspel, on Capitol Hill, Wednesday, May 9, 2018 in Washington.
Alex Brandon/AP
Sen. Tom Cotton tweeted Friday that the US has an "under incarceration problem."
The US has more incarcerated people per 100,000 residents than any country on Earth.
Cotton was talking about the recent spike in crime occuring in some US cities.
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