According to this article from the Guardian, the US government has separated 429 asylum-seeking families in the past two years. The American Civil Liberties Union (ACLU) has filed a lawsuit against the current US government administration, alleging that "the US government has violated due process for hundreds of asylum-seeking families by separating parents and children without a hearing and without showing the child would be endangered by staying with the parent," says the article. And there are reportedly plans in place by government officials to expand this practice.
"These cases included parents and children separated while being placed into immigration proceedings and others separated after the parent was prosecuted for immigration violations while seeking asylum, according to court documents. The suit also claims there is no process for parents to contest a separation."