I think the Germans (and the French, among others in Western Europe) take a more pragmatic view than we do (i.e., somebody somewhere is going to sell this stuff to them. It might as well be us).
BTW, we were among those who sold the precursor chemicals to Iraq for their manfacture of poison gas. Courtesty of
Wikipedia:
The provision of chemical precursors from United States companies to Iraq was enabled by a Ronald Reagan administration policy that removed Iraq from the State Department's list of State Sponsors of Terrorism. Leaked portions of Iraq's "Full, Final and Complete" disclosure of the sources for its weapons programs shows that thiodiglycol, a substance needed to manufacture mustard gas, was among the chemical precursors provided to Iraq from US companies such as Alcolac International and Phillips.