Looks like that was changed in 1985
https://en.wikipedia.org/wiki/National_Emergencies_Act
An activation would expire if the President expressly terminated the emergency, or did not renew the emergency annually, or if each house of Congress passed a resolution terminating the emergency.
After presidents objected to this "Congressional termination" provision on separation of powers grounds, it was replaced in 1985 with termination by an enacted joint resolution.
This means that for Congress to rescind a declared emergency, not only must they pass the joint resolution, but the President must sign the legislation.
The Act also requires the President and executive agencies to maintain records of all orders and regulations that proceed from use of emergency authority, and to regularly report the cost incurred to Congress.
This means that for Congress to rescind a declared emergency, not only must they pass the joint resolution, but the President must sign the legislation.
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That makes zero sense. If a President declares the emergency and Congress disagrees, he’s not going to sign that-he’ll veto it.