The stock market is on a rollercoaster, and traders of cryptocurrencies like bitcoin have watched $1 trillion in value disappear in six months. Is there a risk here of economic contagion, and is Jerome Powell less likely to blink now that he's secured a second term as Federal Reserve Chair? Plus, Rand Paul holds up $40 billion in aid to Ukraine, and the House Jan. 6 Committee subpoenas Republican Congressmen, including Minority Leader Kevin McCarthy.

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