"It... requires state and local police officers to check the immigration status of anyone they suspect is unlawfully in the country, even during routine traffic stops. Critics say that this will inevitably result in widespread harassment of Hispanic or Hispanic-looking Americans."
Why would it?
Are these leftist critics suggesting that Hispanics make up more than the average number of illegal immigrants?
The only acceptable assumption is that all races, equally and with equal probability, are entering the USA illegally.
Anything else is racist.