AP Photo/John Minchillo Former Trump campaign manager Corey Lewandowski testified before the House Intelligence Committee on Wednesday, but refused to answer questions about events that took place during the campaign and his conversations with President Donald Trump since then. Lewandowski is the latest official to stonewall the committee as it probes Russia's election interference and whether the Trump campaign colluded with Moscow. Lewandowski was present during a number of critical events that investigators are keenly focused on.