Trump posts political-ad style video of visit to El Paso hospital set to triumphant soundtrack; Source: White House rebuffed attempts by DHS to make combating domestic terrorism a higher priority; Sources: House Judiciary considering coming back from recess to work on gun legislation; Dayton gunman's friend: I saw him physically abuse his sister; Crying children left without parents after immigration raids; Sources: Acting DHS Secretary was prepared to resign; Inside the power struggle at the homeland security dept; Dems descend on Iowa, Biden, & Bullock give state fair stump speeches; Six months before caucuses, Dems make pitches to Iowa voters; New Iowa poll: Biden keeps lead at 28%, Warren surges to 19%, Sanders falls to 9%; Harris rolls out first TV ad of campaign in Iowa; Report: Climate crisis threatens worldwide food supply;
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The Lead with Jake Tapper