How would the U.S. Navy answer four German capital ships?

If Lütjens sortied all four German capital ships together, how would the United States Navy react?

The U.S. Navy would probably assemble every available East Coast capital ship into a task group and activate whatever additional strength it could find.

A concentrated German surface force would affect American deployment as well as Royal Navy planning. The U.S. Navy would probably gather its available East Coast capital ships rather than leave them dispersed, then activate other usable ships to reinforce that task group. Concentrating the Kriegsmarine could therefore provoke a matching coalition concentration rather than create an uncontested raiding force.