Via The Soufan Group a brief on Idlib Province which starts with:
Over the last week, HTS, operating under cover of what is thought to be its administrative wing, referred to as ‘the Salvation Government,’ has routed or negotiated the surrender of the last remaining ‘moderate’ rebel coalition, the Turkish-backed National Liberation Front (NLF). The NLF receives significant support from Turkey, and its collapse suggests that either Turkey cannot help the NLF enough to prevent its demise, or that the Erdogan government chooses not to for reasons having to do more with the Kurds and Manbij.
Link:http://thesoufancenter.org/intelbrie...dlib-province/

Elsewhere the BBC reports on threats by President Trump to Turkey.
Link:https://www.bbc.co.uk/news/world-middle-east-46859164

I am pretty sure there are no US forces in Idlib Province.