This move by House Democrats to try and derail President Trump's declaration of a national emergency at the U.S.-Mexican border, will ultimately be a failure. Sure it might slow things down and provide the Democrats with some major media coverage, but the President will prevail. The reason he will prevail is because there is a national emergency at the border.
It is unlikely the Republican-led Senate would pass the resolution if it clears the House. This case will go to the courts and as the President outlined last week, he will likely lose in the 9th District Circuit Court. He might also lose at the next highest level court, but he will win in the U.S. Supreme Court.