Maryland Congressman Elijah Cummings, whose district includes Baltimore, has leveled some of the most scathing criticisms of Donald Trump’s border policies. Joy Reid is joined by Baltimore natives, filmmaker John Waters and activist Dayvon Love, on new tweets disparaging Baltimore and its residents by the president. Then: Immigrant children currently held in U.S. custody could be detained indefinitely according to reports. Democratic Congressman Raul Ruiz of California and MSNBC correspondent Jacob Soboroff join Joy Reid to discuss the ongoing border crisis, including the American citizen detained for 23 days by Border Patrol. And: Robert Mueller’s testimony made no difference to 47% of the people polled in an ABC News/IPSOS poll regarding their position on whether Donald Trump should be impeached. Joy Reid is joined by Rep. Val Demings of Florida, who questioned Mueller during last week’s hearing, on the House Judiciary Committee opening a de facto impeachment inquiry. Plus: Anti-racism educator Tim Wise went viral after his tweetstorm on defeating Donald Trump. Wise joins Joy Reid on how the Democrats can beat the president in 2020. All this and more in this Sunday edition of AM JOY on MSNBC.Learn more about your ad choices. Visit megaphone.fm/adchoices