Speaker of the House Nancy Pelosi told her caucus earlier today she will bring a resolution to the floor tomorrow for a House vote to appoint impeachment managers and submit the two articles of impeachment to the Senate.  It appears Speaker Pelosi is timing the resolution to take oxygen from the White House signing of the U.S-China ‘phase one’ trade agreement, also expected tomorrow; a major win for the U.S. trade reset.
The Speaker made the announcement during a private caucus meeting.  However, Pelosi did not name the impeachment managers, that announcement is expected to be made at the same time as the house vote.

WASHINGTON DC – […] The resolution the House will vote on Wednesday will do three things: transmit the articles of impeachment against Trump; name the team of impeachment managers; and provide funding for the trial. Democrats and Republicans will have five minutes per side to debate the resolution on the floor, according to rules established during the House impeachment debate in December. (more)