"While we will continue to engage on a number of fronts at the United Nations", Secretary of State Rex Tillerson said in a statement Sunday, "in this case, we simply cannot in good faith support a process that could undermine the sovereign right of the United States to enforce our immigration laws and secure our borders".
Negotiations on the GCM will be based on the New York Declaration, a document adopted by the United Nations in 2016 that commits to "strengthening global governance" and contains a number of policy goals that are inconsistent with US law and policy.
The American pullout from the pact is scheduled for the end of 2018, AFP reported.
UN General Assembly President Miroslav Lajcak on Sunday expressed regret over a USA decision to withdraw from the global migration compact, a UN-led process toward safe, orderly and regular migration. "The global approach in the New York Declaration is simply not compatible with USA sovereignty".
USA participation in the compact process began in 2016, following the Obama administration's decision to join the New York Declaration for Refugees and Migrants.
It will present a framework for comprehensive global cooperation on migrants, set out a range of actionable commitments and tackle issues such as protecting the safety, dignity, human rights and fundamental freedoms of migrants. These commitments are known as the New York Declaration for Refugees and Migrants.More news: Ali dethrones Cotto, seizes WBO 154lb title
He added that the USA "has the experience and expertise to help ensure that this process leads to a successful outcome".
The withdrawal comes days before a global conference on migration that starts Monday in Puerto Vallarta, Mexico. Haley reportedly said the USA should continue to take part in the negotiation process. Trump has vowed to erect a border wall between the US and Mexico, ramp up arrests of illegal immigrants and slow down legal immigration into the U.S.
During his election campaign, President Trump warned that refugees allowed into the United States could become a great "Trojan Horse" that could harm America if left unchecked.
She explained the motives behind the move, saying that such domestic policy matters as migration decisions "must always be made by Americans and Americans alone".
Under Trump, the USA has also withdrawn from many global commitments, including the Trans-Pacific Partnership trade deal, the Paris climate agreement and UNESCO, the U.N.'s culture and education agency.
"The president risks isolating the US for the sake of his own fans - and his own ego", the op-ed said.