It depends entirely on who is in power in Lebanon. When the
Christians in Lebanon have more power, they pursue a more Pro-US
orientation because they can see the US a security guarantor. When
the Shiite Muslims in Lebanon, especially Hezbollah, have more
power, they pursue a more hostile anti-US orientation because they
see the US a shill for the Israelis. The US has a functional
relationship with Lebanon, but no serious alliances, military
agreements, or trade agreements between the US and Lebanon.