When the Germans needed a replacement for the Lockheed F-104G in the strike role, the US piled on the pressure, aiming to persuade Germany to procure a US-built fighter.
In those far off days, the Germans had enough balls and backbone to procure the aircraft that their own industry was producing, that their own taxpayers and workers were benefiting from and effectively told the US that if they wanted the Luftwaffe to deliver American nuclear weapons, then they, the US, would have to integrate the B61 on their new Tornados.
It was very much in the USA's interest to 'burden share' with its allies, and it integrated B61 on the Tornado without further demur.
The same is true today, and if Germany were to stick to its guns again, the USA would need to decide whether it wanted the Luftwaffe to share in the strike role, and if it does (and it will) then it would have to integrate the B61 on the Luftwaffe's choice of platform. Unless a gutless and supine German Ministry of Defence gives the impression that it can be bullied into selecting the platform that the US wants it to procure....
Design of a nuclear weapons pylon for the Eurofighter is well advanced, thanks to the Belgian campaign, when the Commander of the Belgian Air Component was shown a strike mission in the sim/rig, with production representative software. Nuclear weapons integration on the Super Hornet is not any further advanced. For Speedywheels - the Super Hornet does not have any strike capability.