That's kind of an odd question, considering that conservatives are the ones who desire to maintain the national sovereignty of the US and other countries, whereas the progressive neoliberal elites, and many of their supporters desperately want to put an END to the national sovereignty of most or all countries, replaced by an unelected, authoritarian leftist/socialist centralized government!
Ironically, the progressive movement has a LOT in common with neo-cons and multinational corporate elites when it comes to globalism. For the most part, ALL of those groups are pushing the same globalist agenda! Why do you think SO MANY leftists, democrats and even neo-cons were outraged at Britain's exit from the, undemocratic,, authoritarian European Union? That body was largely run by an unaccountable, foreign, unelected, centralized, bureaucracy, whose leaders would make major decisions regarding policy in other countries, with those countries often having NO input, no choice, and no recourse for unpopular policies!
The more relevant and pressing questions that people should be asking, is why the left, the multinational corporate elites and neo-cons are so focused on weakening and eventually ending the sovereignty of the US, and most other western countries! Why do they drone on about the "importance of democracy", while supporting undemocratic, unelected govt entities, and calling for their expansion?
Maybe it's about time that leftists start to do some research, and some critical thinking about the information they so willingly accept as truth. There is SO much propaganda that you are exposed to each and every day, and it's time to stop automatically accepting it all as gospel truth. Start looking for the important details of EVERY issue that are intentionally omitted from the daily reporting, looking at the WHOLE picture, using a critical eye for detail, and stop blindly trusting people who've been deceiving you for so long..