President Trump shows them that while they may have won the House, it is a phyric win as he is still president and owns the news cycle. No celebrating lap for them. Besides, holding the Senate is far more important, both as check and to approve Trump’s appointments, treaties, etc.
Trump is sitting pretty. House doesn't send Trump the budget he wants, he won't sign it, and it's now the Democrat's fault. Health care? the Dems. Immigration? the Dems....