Why did the Germans threaten the lend lease act?

The Germans threatened the Lend-Lease Act as a response to the increasing support the United States was providing to Allied nations, particularly Britain and the Soviet Union, during World War II. They viewed this assistance as a direct threat to their military efforts and expansionist goals. By exerting pressure, Germany aimed to deter the U.S. from further involvement in the conflict and to weaken the resolve of its allies. This strategic posturing was part of their broader military strategy to maintain dominance in Europe.