Germany may look to withdraw its gold from US

It's not there. The German's wanted to check on their gold in 2007 and were denied access to the vaults. In 2011 they were allowed access to only 1 of the 9 compartments where Germany's gold is stored.

If it's really there, why would you not show it?

However both the Netherlands and Germany have already withdrawn about 270 tons of gold around 2015. But Germany still has over a 1000 tons in Manhattan.