The Kansas trial court convicted Ramiro Garcia and Donaldo Morales, both of whom are undocumented immigrants, for using someone else’s social security number which is a violation of the state’s identity theft laws. The trial court’s decision was overturned by the Kansas Supreme Court as they found it to be an improper effort to enforce federal immigration law. The case will now be heard by the US Supreme Court early next year. If the US Supreme Court overturns the decision, it would grant more leeway to prosecute undocumented immigrants for identity theft or other crimes.
See "Supreme Court Could Open Immigration Enforcement ‘Pandora’s Box’", Laura D. Francis, Bloomberg Law, March 28, 2019