Trump, who ran for office in 2016 promising that Mexico would pay for his plans to expand the border wall, obtained more than $15 billion in federal funds for the project, including $5 billion provided by Congress through conventional appropriations. The controversy was over the president tapping into Pentagon accounts for the remaining $10 billion, including the $2.5 billion transfer in 2019 that the 9th Circuit said was unlawful. On his first day in office, Biden rescinded the emergency Trump had declared and said constructions on the border wall would stop. In the other case, the Supreme Court in March granted the Trump administration’s emergency request to let it enforce its “Remain in Mexico” policy. It allows the Department of Homeland Security to return immigrants who cross at the southern border to Mexico while they wait for their claims to be heard. The protocol, which took effect in January 2019, was a fundamental change to previous U.S. policy and was intended to block massive migration from Central America. A federal judge blocked the initiative with a nationwide injunction, saying the policy contradicted the text of the Immigration and Nationality Act. A 9th Circuit panel upheld part of the ruling. Biden’s Department of Homeland Security has stopped implementation of the protocols.