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The world’s largest cryptocurrency exchange finds itself at the center of a political firestorm over allegations that it helped boost a Trump family–linked stablecoin just before President Donald Trump pardoned Binance’s founder and former CEO—a sequence of events that Sen. Elizabeth Warren (D-MA)  is calling corruption.

Binance CEO Richard Teng pushed back against the accusations last week, according to CNBC, denying that the exchange promoted USD1, a stablecoin created by the Trump family’s crypto venture, World Liberty Financial, ahead of the presidential pardon of Changpeng Zhao.

But the timeline of events has…