You're arguing to the wrong assertion. She was not jailed for traffic infractions. She was jailed for failing to pay fines, which incarceration is expressly a

You're arguing to the wrong assertion. She was not jailed for traffic infractions. She was jailed for failing to pay fines, which incarceration is expressly against the law. C.f. https://www.npr.org/sections/thetwo-way/2015/10/07/446681086/aclu-sues-benton-county-wash-for-operating-modern-day-debtors-prison https://www.npr.org/sections/thetwo-way/2015/10/07/446681086... for a recent example of this being prosecuted.