is, will the president mount a defense in this next phase. as impeachment shifts to the house judiciary committee, republicans want more witnesses called to explain the constitutional grounds for removing a president from office. in a letter, top republican doug collins urged democrats in charge to include conservative academic experts to testify. so the committee maintains its credibility by not rushing to articles of impeachment or hearing only from scholars with demonstrated animosity towards the president. soon democrats expect to deliver a report on the evidence they gathered from earlier witnesses to allege an abuse of power by the president over ukraine, military aid, and a biden investigation. monday, president trump heads overseas to london. where he will join european leaders for the nato summit celebrating 70 years of that