BOSTON (Reuters) -A federal judge said she will block President Donald Trump's administration on Thursday from revoking the temporary legal status of hundreds of thousands of Cubans, Haitians, Nicaraguans and Venezuelans in the United States.

U.S. District Judge Indira Talwani in Boston said the U.S. Department of Homeland Security's decision to cut short a two-year parole granted to the migrants under Trump's Democratic predecessor, Joe Biden, was based on an incorrect reading of the law.

The administration's action, announced in a Federal Register notice published last month, marked an expansion of the Republican president's hardline crackdown on immigration.

The judge, an appointee of Democratic President Barack Obama, said the administration wanted to expose about 450,000 people to expedited deportation effective April 24 based on a wrong interpretation of the statute governing the process.