House Judiciary Committee Chairman Jerrold Nadler (D-N.Y.) on Sunday cited Miller’s role in developing the targeted-release plan in calling on him to testify. “Steve Miller, who seems to be the boss of everybody on immigration, ought to come before Congress and explain some of these policies,” he said in a CNN interview.

While Cabinet officials routinely testify before Congress on budget and oversight matters, it is unusual for lawmakers to publicly question presidential advisers like Miller — particularly in an adversarial scenario. Presidents of both parties have declined to make their executive aides available to congressional committees, citing the constitutional separation of powers…

Rep. Kathleen Rice (D-N.Y.), chairwoman of the House Homeland Security subcommittee on border security, facilitation and operations, said in an interview that Miller needs to come before her panel to “make his case for these terrible policies to the American people instead of being this shadow puppeteer.”

“It’s clear that he’s the one pulling the strings,” she said. “And if he’s going to continue advocating for these policies and personnel changes, then he needs to come before the American people and explain himself. He has to be held accountable.”