Trudeau's former top adviser set to testify at House of Commons justice committee

Prime Minister Justin Trudeau's close friend and former top adviser will be testifying at the at the House of Commons justice committee today about the SNC-Lavalin affair.

Gerald Butts resigned last month, but never explained why.

He will testify about his discussions with former attorney general Jody Wilson-Raybould about SNC-Lavalin.

She claims he was one of about 10 Trudeau government officials who pressured her to give the engineering firm a kind of plea bargain on criminal charges.

Butts is testifying two days after a second Trudeau cabinet minister resigned.

Treasury Board president Jane Philpott declared she had lost confidence in the government's handling of the SNC-Lavalin case.

Trudeau appears to have decided to keep a low profile at least until after Gerald Butts testifies.

Liberals are hoping Butts will finally provide another side to the story that will help the government defend itself against accusations of political interference in the justice system.