A key cybersecurity law with broad bipartisan backing is in danger of expiring because of last-minute demands from Sen. Rand Paul (R-Ky.), who seems reluctant to engage with the private sector or other committee members on the issue, congressional aides from both parties tell Axios.

Why it matters: The authorities that expire in late September underpin most information sharing on cyber threats between the private sector and the U.S. government. If they lapse, that trading of information could cease next month, lawmakers and private sector executives have warned.

Driving the news: The Senate Homeland Security Committee canceled a markup planned for Thursday on a bill that Paul, the committee's chair, was introducing that would make major changes to the Cybersecurity Information Sharing Ac

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