The federalized Guard troops arrived in those cities in early October but never deployed operationally because of legal challenges that continue playing out in the courts, ABC News reported.
Late Friday night, US Northern Command hinted that changes were coming to the federalized troop mission in those cities but provided no details when it posted on X that "in the coming days, the Department will be shifting and/or rightsizing our Title 10 footprint in Portland, Los Angeles, and Chicago to ensure a constant, enduring, and long-term presence in each city."
The Texas and California Guard members had been activated on federal orders by US President Donald Trump in early October and placed on an active duty Title 10 status.
While they deployed to the two cities, the troops never carried out operations because of several legal rulings that placed a hold on their deployment.
These troops will now return to their home states of Texas and California, according to the two US officials.
California will maintain a ready force of 100 Guard members and Texas will maintain a force of 200 members who have all volunteered for the mission, according to one of the officials.
The 200 members of the Illinois National Guard who had also been federalized by President Donald Trump to operate in Chicago will remain on active duty, said the official.
But there will be a change among the 200 federalized Oregon National Guard troops as their numbers will be reduced to 100 remaining on active duty, the official added.