Donald Trump’s nominee for ambassador to the U.N. faced an intense grilling over the Signalgate scandal at his confirmation hearing.

Maher and actor John Leguizamo sparred after the actor said there’s “plenty of room” in the U.S. for undocumented immigrants.

The departure of Troy Jones, vice president of sales for North America, marks only the latest exit of a key figure from the company as its market standing continues to take a pounding.