Judge blocks Trump limits on how long foreign students and journalists can stay in US

Ruling comes a day before homeland security department's substantial restrictions were set to take effect

A federal judge on Monday blocked the Trump administration from implementing a new rule that would limit how long foreign students and journalists can remain in the US without applying for extensions.

F Dennis Saylor, the US district judge in Boston, ruled in favor of a coalition of unions and higher education advocacy groups a day before the federal Department of Homeland Security (DHS)'s rule was set to take effect.