The cases included an investigation into a Virginia nursing home with a recent record of patient abuse; probes of fraud involving several New Jersey labor unions, including one opened after a top official of a national union was accused of embezzlement; and an investigation into a cryptocurrency company suspected of cheating investors.

In total, the DOJ quietly closed more than 23,000 criminal cases in the first six months of President Donald Trump’s administration, abandoning hundreds of investigations into terrorism, white-collar crime, drugs and other offenses as it shifted resources to pursue immigration cases, according to an analysis by ProPublica.

The bulk of these cases, which were closed without prosecution and known as declinations, had been referred to the DOJ by law enforcement agencies under prior administrations that believed a federal crime may have been committed. The DOJ routinely declines to prosecute cases for any number of reasons, including insufficient evidence or because a case is not a priority for enforcement.