On Monday's broadcast of MSNBC's "All In," 2020 presidential candidate Senator Kamala Harris (D-CA) reacted to DHS Secretary Kirstjen Nielsen's departure by stating that while she has called for Nielsen to resign, the issue isn't just about Nielsen, "It's the entire administration," and the fact that the Trump administration "has failed to project the morals and the values of our country, and instead, is engaged in political gamesmanship around an issue that is having real consequence for very vulnerable people."