With the field of Democrats running for president growing more crowded
each week, the Trump re-election effort has started to zero in on three
of them. But Joe Biden -- who's yet to decide whether he'll join the
field -- is thought to be the candidate the campaign is most worried
about in a general election contest.

Plus, the unfolding drama over the budget, the president's plan for a
wall on the border with Mexico, and a looming shutdown gives us plenty
of clues about what to expect in the era of divided government.