The House passed its SCHIP bill on Tuesday night and the Senate followed suit yesterday. So why won’t congressional Democrats send the bill to President Bush? House Majority Leader Steny Hoyer told National Journal that Democrats “might hold onto the bill over the weekend.”

Could it be that they’re trying to delay an inevitable veto from Bush until Monday? That’s when the Service Employees International Union is staging a protest at the White House. “We must say no to Bush’s veto and yes to children’s healthcare!” an e-mail from the Center for American Progress announced yesterday.

Tax-and-spend liberals will be gathering at McPherson Square and the corner of 14th and K Streets at 10 a.m. Monday. The march will proceed to the White House, “where children from across the country will deliver red wagons carrying mail bags filled with petitions signed by more than 1 million Americans.”

Of course, having Bush’s veto delayed until Monday would make the protest all the more dramatic for the media.

UPDATE — 5:34 p.m.: It gets worse. The Chicago Tribune reports that Democrats will have a 12-year-old deliver the response to President Bush’s weekly radio address.