If the Imperator sailed on as per 31 July 1914 and the passenger liner Colombus also was completed in time to sail on its maiden voyage and thet end up in New York, and if the Germans cancelled the last sailing of Prinz Adalbert [captured in Falmouth otl] and the SMS Kaiser Willhelm Der Grosse ends up running out of coal and the SS Konig Albert and SS Kaiser Franz Josef also end up in US ports[their last sailings were on 11 and 13 June 1914 respectively otl, so, I can't see why they couldn't be there] and another German passenger liner never sailed for Trondheim and SS Prinz Friedrich Willhelm also sailed for America rather than go on its summer cruise, plus many German and Austrian liners in Chile, Argentina and Brazil broke out for home but reached New York or other American ports to avoid capture, what will be the effects on WW1? Probably not much but a division more of US troops?