With a "normal" US Admin, I doubt this would be a concern. With this current regime, it could be risky. I could see Trump having a fit and if he realizes the EU needs US LNG, he could cut the supply or put a huge tax on it.
But if that happens, maybe the US Fossil Fuel "Cartel" will revolt. I think the EU really need to accelerate their renewal push even more. From what I read they are doing good w/renewals, but I would be nervous if I was in the EU until renewals and/or nuclear power provides 90% of the power.
True but if Europe was willing to accept Russian gas fueling their economy then they have no excuse to not accept American gas in it's place.
That doesn't really support his rhetoric. He has always said that he doesn't like the trade deficit, which is a dumb idea, so increasing exports would go along the same vein as increasing tariffs to limit imports.
I think what would be more likely is the EU does something with it as a bargaining chip to reduce import tariffs rather than Trump trying to tax it out of existence.
And just to be clear Trump's trade policy is dumb and I don't support it.