According to Keith Kellogg, Trump allowed Ukraine to hit deep into Russia. And also, USA is considering Ukraine's request to send Tomahawk missiles.
Meanwhile Russia is starting to feel fuel shortages. And it's not only in occupied Crimea, but also deeper in continental Russia.
But consider. The only ways the US can help Ukraine in the war are to:
1. Send armament and troops;
2. Send money;
3. Nukes.
The danger in pushing Russia too hard is the destruction of Western Europe... something Trump doesn't want to do because of morals, and the benefits the US gets from European trade.
The Ukraine war will long have been over with Russia as the winner, by the time Western Europe gets its act together on its own. Consider that even though the Russian expansion in Ukraine seems to be slow, it is happening. Ukrainian troops are essentially gone long ago. Western European troops being sent in, is one of the biggest reasons why Putin is attacking harder, now.
When Western troop usage in Ukraine, and drone attacks in Russia, become strong enough, Putin will take off the kid-gloves.
Ultimately the US would be the winner, but it will be the loser because of losses in winning, even though it wins more that Russia. But there is no reason to go there yet, because all of Europe will be lost when things get to that point (Russian nukes).
Essentially, Ukraine will fall to Russia, and Russia will get its Ukraine buffer zone against NATO. And all of this is without the BRICS nations having formally entered to help Russia... which nations are changing more and more, to be in favor of Russia because of the general thievery of the US banking system.
