Special counsel Robert Mueller appears to have the green light to testify before Congress about his investigation into Russian interference in the 2016 election and possible obstruction of justice by President Trump.

“It’s Bob’s call whether he wants to testify,” Attorney General William Barr told the Wall Street Journal on Wednesday. He was departing for El Salvador where he would be meeting his Central American counterparts to discuss gang violence. “I’m trying to break away from Washington and do the real work of the attorney general,” he added.