Board 8 > In WW1 and 2, was the US wrong for not entering until personally threatened?

(+) Yeah! (+)

Just finished Dead Wake by Erik Larsen(amazing book about the sinking of the Lusitania), which got me thinking about how both WW1 and 2 saw American intervention only after the bad guys(and yeah, even in WW1 Germany were explicitly the bad guys even if Britain was pretty shit too)directly threatened them, in WW1 through Germany attempting to scheme an invasion through Mexico, and WW2 through Pearl Harbor.

WW1 seems especially questionable to me - I understand wanting to stay Neutral, but Germany were doing some horrific shit, and unlike WW2 it was pretty abundantly clear that if the US were to enter, the war would end much quicker, with far fewer dead. So do you think they should have?