“In the future” is not “now”.

Neither the current administration nor Israel are particularly popular with the US public today, and those are correlated in that Israel has particularly lost support from Democrats and Independents in the US, suggesting that a change in power (legislative or executive, and especially both) in the US government could very easily spell much less favorable US policy toward Israel.

That is only 6% of our Navy. Not half.

"Let's do it now, when they'd still move half their navy there for us, rather than in the future, when they might not."