Sources say Democratic donors are holding back big checks because of uncertainty about President Joe Biden's future. Life-threatening heat is gripping Texas as many people still don't have power. Doctors Without Borders are pulling their staff from a hospital in Sudan because of the conflict there. New Hampshire police are investigating the death of a Dartmouth College student as a possible hazing incident. Plus, for the first time in seven years, Costco is raising its membership fees.
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CNN 5 Things