Why is the US reinforcing military assets in the Middle East?

The United States has deployed two aircraft carriers and fighter jets to the Middle East during Israel’s war on Gaza.
It is reportedly moving more warships from the Arabian Gulf to the Gulf of Aden to deter Houthi attacks on the Red Sea.
US military aid has allowed Israel to continue its wholesale destruction of Gaza unhindered, ensuring that Hamas's allies are suitably intimidated and deterred from taking any military action.