The White House is considering expanding its much-litigated travel ban to additional countries amid a renewed election-year focus by President Donald Trump on immigration issues.

That's according to four people familiar with the deliberations. Two of the people said that a document circulating in the White House outlines the plans, but the countries that would be affected were blacked out.

The people spoke on condition of anonymity because the measure has yet to be finalized. The expanded ban could include several countries that were initially included in the initial ban but later removed from the list.