July 10 (UPI) -- The Supreme Court is letting stand a lower court's ruling barring Florida from enforcing a contentious immigration law that imposes criminal penalties against undocumented migrants who enter the state.

The United States' highest court issued its single-sentence ruling on Wednesday. No reason was given.

"This denial reaffirms a bedrock principle that dates back 150 years: States may not regulate immigration," Cody Wofsy, deputy director of the American Civil Liberties Immigrants' Rights Project, which had filed the lawsuit challenging the law, said Wednesday in a statement.

"It's past time for states to get the message."

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