Some of Donald Trump’s most controversial campaign proposals will move one step closer to reality Wednesday when the president is expected to sign a series of sweeping executive actions on immigration and border security, reportedly fulfilling promises to build a wall on the U.S.-Mexico border, curtail the number of refugees entering the country, ban immigration from several majority-Muslim countries, and crack down on so-called “sanctuary cities.”

The executive actions are among several planned changes to the U.S. national security policy, The New York Times reports, including potentially designating the Muslim Brotherhood as a terrorist organization and reviewing whether to resume the use of C.I.A. “black site” detention centers. While one draft reviewed by the Times says that “no person in the custody of the United States shall at any time be subjected to torture, or cruel, inhuman or degrading treatment or punishment, as describe by U.S. or international law,” the draft of another would order a reevaluation of so-called “enhanced interrogation techniques,” which could include water boarding.

With his executive action on border security, Trump is expected to direct the use of federal funds to begin construction of a wall under the expanded authority of a pre-existing 2006 law giving the Department of Homeland Security discretion over what kind of barrier to build. (The cost of construction, Trump has said, will be paid by U.S. taxpayers until he can figure out how to “have Mexico pay,” as he promised repeatedly on the campaign trail. President Enrique Peña Nieto of Mexico has insisted his government will not reimburse Trump.) Democrats have said expenditures on the wall could top $14 billion.

Trump is also reportedly considering a temporary ban on visas to individuals trying to enter the country from a number of majority-Muslim Middle Eastern countries—Syria, Iraq, Iran, Libya, Somalia, Sudan, and Yemen. The proposed policy would not go as far as Trump’s campaign promise to ban Muslims from entering the United States, although it would have a similar effect. Trump will also review the U.S. refugee program, The Washington Post reports, and could issue a four-month freeze on the program while his administration determines a long-term plan. “From a legal standpoint, it would be exactly within his legal rights,” Stephen Legomsky, who was chief counsel at U.S. Citizenship and Immigration Services under President Obama, told Reuters. “But from a policy standpoint, it would be terrible idea because there is such an urgent humanitarian need right now for refugees.” The Wall Street Journal reports that Trump will likely limit the number of refugees allowed to resettle in the U.S. during the fiscal year at 50,000, less than half of the 110,000 cap set under President Obama, according to an official close to the discussions.