Last I checked Sharm el Sheikh is on the other end of Sinai from Gaza. Unless us troops were to deploy to Israeli territory there isn’t much of a mission for the US troops (except to get shot at by Hamas).
When Secretary of State Hillary Clinton arrived in Jerusalem from Bangkok Tuesday, she tried assuring Netanyahu that President Obama had decided to accelerate the construction of an elaborate US system of electronic security fences along the Suez Canal and northern Sinai. It would also cork up the Philadelphi route through which arms are smuggled into the Gaza Strip.