The approvals are legal: The Immigration and Nationality Act does not set minimum age requirements. And in weighing petitions for spouses or fiancees, U.S. Citizenship and Immigration Services goes by whether the marriage is legal in the home country and then whether the marriage would be legal in the state where the petitioner lives.
But the data raises questions about whether the immigration system may be enabling forced marriage and about how U.S. laws may be compounding the problem despite efforts to limit child and forced marriage. Marriage between adults and minors is not uncommon in the United States, and most states allow children to marry with some restrictions.
There were more than 5,000 cases of adults petitioning on behalf of minors and nearly 3,000 examples of minors seeking to bring in older spouses or fiances, according to the data requested by the Senate Homeland Security Committee in 2017 and compiled into a report.