House Democrats tussle with acting AG Whitaker over testimony date

House Judiciary Committee Chairman Jerrold Nadler said afterDemocrats won the House majority in November's elections that Whitaker would be his first witness.Some Democrats are concerned that Whitaker's appointment to replace ousted Attorney General Jeff Sessions violated the U.S. Constitution and represented an effort to undermine Special Counsel Robert Mueller's investigation into Russian interference in the 2016 U.S. election and possible coordination with Trump campaign members.