100% agree that the EU puts up a lot of trade barriers- especially in agricultural products and other areas...and they certainly do not serve to maximise the EUs economic performance but may in some cases be driven by strong lobby groups and cultural values which may or may not argue that considerations other than maximising trade are also valid. Many country impose trade barriers around agriculture to enable/preserve self sufficiency in food production and to preserve traditional farming cultures- eg India, China and Japan.

Do not however see climate change science as a scam - the overwhelming scientific consensus is that human activity is changing the climate and that caution and preventative action is urgently justified. The US has ditched the Paris agreement and now joins sociopath rogue states Iraq Iran Turkey Libya Angola Sudan Yemen and Eritrea as a non signatory - a nation saying screw you to the rest of the world, environmental stability and common sense. Now hes done it again with his irrational trade obstructing and unjustified tariffs too. Whether he is harming the rest of the world as much as the US itself is debatable but what is certain is the USA is increasingly an object of pity and horror.