Trump Tweets About Immigration 'Caravan,' DACA

President Trump tweeted extensively about immigration over the past two days, blaming Mexico for weak border enforcement and Democrats for not accepting a deal on the expiring DACA program.

Also, Trump meets with Larry Kudlow, his economic advisor, on Monday as China imposes retaliatory tariffs on American-made products.

NPR's Scott Horsley (@HorsleyScott) joins Here & Now's Robin Young to discuss the week ahead in politics.