"Countries that refuse to hold their soldiers accountable must recognise that this either stops, or their troops will go home and their financial compensation will end", she said.
Haley raised the thorny topic of allegations of sexual abuse and exploitation by United Nations peacekeepers.
The United Nations Security Council on Thursday agreed to shut down the peacekeeping mission in Haiti after 13 years and replace it with a smaller police-only force.
The UN has no jurisdiction over peacekeepers, relying on countries that supply the troops to oversee discipline.
The UN received complaints in 2007 of "suspicious interactions" between Sri Lankan soldiers and Haitian children with investigators interviewing nine victims as well as witnesses.
FILE - A Brazilian U.N. peacekeeper opens a gate at the U.N. base in the Cite Soleil slum of Port-au-Prince, Haiti.
A woman who was raped by a peacekeeper tells the AP, "As far as the United Nations goes, they came here to protect us, but all they've brought is destruction".
In Haiti, the mission known by its acronym MINUSTAH, was deployed in 2004 after the departure of president Jean-Bertrand Aristide to help stem political violence but it has not endeared itself to Haitians.
The shutdown of the $346 million mission, recommended by U.N. chief Antonio Guterres, comes as the United States looks to cut its funding of U.N. peacekeeping.
China urges diplomatic solution to US-N Korea feud
US Secretary of State Rex Tillerson will next week chair a special meeting of the UN Security Council on North Korea. But the U.S. wanted to see a "tangible signal" from North Korea that it is serious about engaging in talks.
The U.N.'s child rape problem extends well beyond the Haitian example.
Deputy French U.N. Ambassador Alexis Lamek said the time had come to move toward a new U.N. presence in Haiti, "one which is better adapted to the country's needs and the conditions on the ground, which have significantly changed".
And the country is still struggling to recover from the massive Hurricane Matthew in October that wreaked more than $2 billion in damage, killing hopes for an economic revival through agriculture.
Peacekeepers from Bangladesh, Brazil, Jordan, Nigeria, Pakistan and Uruguay were also implicated in abuse cases, with some abusers said to have coerced victims into performing sexual acts, using food and money in a number of locations around the world.
The mission also has been dogged by controversy in recent years.
Associated Press notes that in Haiti, at least 134 Sri Lankan Peacekeepers are alleged to have been involved in a sex ring from 2004 to 2007. "As you know, there was no deployment of Sri Lankan peacekeepers for a long time".
"I've heard the stories about Sri Lankans abusing Haitians, but I was treated well", said the 24-year-old in Port-au-Prince.
Sandra Honore, the United Nations envoy for Haiti, told the council on Tuesday that "Haiti's political outlook for 2017 and beyond has significantly improved" following elections.
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