Biden: "Can't let up" in fight against "dangerous" Delta variant. Dow sinks 725 points as Delta variant fears hit Wall Street. Two more U.S. athletes test positive ahead of Olympics. First Capitol riot felon sentenced, gets 8 month sentence for breaching Senate during January 6 attack. McCarthy names five Republicans to January 6 committee. U.S. and allies accuse China of "pervasive pattern of hacking".
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