Democrats have been on cloud nine for the past week since President Joe Biden announced his decision not to run for re-election. However, Republicans have shifted their focus and sharpened their strategy for attacking Harris. The Trump campaign is going live with its first TV ad attacking Harris in swing states today. They will blame the crisis at the US-Mexico border on Harris, the Biden administration's so-called "border czar." Will it be enough to dampen the electric momentum surrounding the vice president? Playbook co-author Rachael Bade looks into it. In addition, a bipartisan expansion of the child tax credit is up for a vote today, and it is expected to be defeated by Republicans. How will this play with Republicans' family value-centric identity?