Characterizing the US's current commitments in Ukraine and Israel as 1.5 fronts is baffling. Neither of those constitutes even a tiny fraction of the American capability to wage war.
Yes, there are some commitments in the Eastern Med, but as Ford heads home, the Bataan ARG of literally three ships and zero full-sized aircraft carriers is judged sufficient to hold that down, because remember that their role in Israel is to, uh, do exactly nothing.
Now, putting aside Israel-as-such, there is Ike's group in the Red Sea. The Red Sea presence isn't directly about Israel, but about Houthi threats to global shipping. If the US was in a hot war, global shipping could go around Africa (which Maersk and another line had already decided to do, I've seen some pundit modelling on the costs and consequences, it's pretty miserable from the standards of peacetime, with consequences on the consumer supply chain, but in terms of "oh no the US might lose a hot war with China", going around Africa will just have to work itself out).
And yes, they're moving amazing amounts of arms to Ukraine, but not as much as it looks like. There's a lot of already-destined-for-scrap vehicles, and a lot of ammunition that was approaching the end of its shelf life, and so on. What fraction of Abrams went to Ukraine? (under 1%) How many F16s are going to Ukraine? (I believe that all nations collectively have committed around 60 F16s, which if supplied entirely by the US would be about 2% of US fighter aircraft.) Don't get it twisted, the US is not going full-bore in Ukraine. The stockpiles and production capacity of 155mm is a concern for sure, and air defense missiles too. But it's not even close to being a "front", even in terms of the logistics demands (and obviously in terms of combat personnel it is 0% of a front). And because of that conflict, Russia is nearly incapable of doing anything more aggressive than it already is, which frees up military resources relative to the situation 2 years ago. Except 155mm, of course.
None of this means that the US does or does not need to increase the size of its fleet to meet goals involving its pacing threat, which is the context of this thread, and I'm agnostic about that higher-level claim. And I'm not saying that everything is peachy, neither with respect to the health of the US fleet in general, or in particular with respect to industrial competitiveness vis a vis China. But the US is not currently in a 1.5-front war, that's just absurd.