I think we all want to help Ukraine, but I think, for the US to enter the fight militarily it would be disastrous.
For starters, how could our Navy enter the Black Sea to come to their aid? The Russians own the Black Sea, for heaven’s sake, its a Russian lake crawling with Russian Navy vessels. The entrance into the Black Sea from the Med is a very narrow slot, easy to close.
And that’s just the Naval side of this. The land mass of Asia on on the side of the Russians, the Ukraine is their back yard.
Russia also has advance "carrier killer" weaponry, including tactical nuclear torpedoes. How many carriers can we afford to lose? This isn't WWII where we were cranking them out of shipyards them by the dozens. We only have ten of them. They are massive national investments and take years to build.