More childish “No no no I won’t and you can’t make me!!” from the Trump House.

The White House will refuse to allow senior adviser Stephen Miller to testify before the House Oversight Committee, according to a letter obtained by The Washington Post.

Oversight panel Chairman Elijah E. Cummings (D-Md.) received a letter from the White House counsel Wednesday denying his request that Miller come before the committee to testify on the Trump administration’s immigration policies.

…

Few expected Miller to comply, given precedent that White House staff traditionally do not testify.

But Miller, Democrats worry, has had more power than a traditional White House staffer, particularly over immigration.

Miller was behind a controversial proposal to bus undocumented migrants to the jurisdictions of political foes of the president, Department of Homeland Security officials told The Post. He also pushed the policy that led to migrant children being separated from their parents after they crossed the southern border illegally, even if they were seeking asylum.

And Miller was reportedly the driving force behind the shake-up of the Department of Homeland Security at its highest levels, making room for the White House to install officials who will do Trump’s bidding despite concerns about legality.

But hey, he’s staff, not a Senate-confirmed official, so they can’t make him talk.