Fishers would be allowed to operate within the Pacific Remote Islands Marine National Monument southwest of Hawaii.

Environmental groups are planning to sue President Trump over his plans to open the Pacific Islands Heritage Marine National Monument, formerly known as the Pacific Remote Islands Marine National Monument,

Mr. Trump issued an executive order opening up the Pacific Islands Heritage Marine National Monument, which lies some 750 miles west of Hawaii. President George W. Bush established the monument in 2009 and President Barack Obama expanded it in 2014 to its current area of nearly 500,000 square miles.