Races 17 and 18 of the season at Sonoma in California mark the first time the series has visited the USA.
Huff is 17 points behind team-mate and standings leader Yvan Muller following an impressive win and third-place finish at the last race weekend in Brazil while Alain Menu in the third Cruze is third 20 points behind the Briton.
And with a maximum of 55 points up for grabs at each of the remaining four race weekends, Huff is determined to hit the ground running following the two-month summer break.
"This final part of the championship is going to be decisive," said Huff. "It’s great to be in the US for the first time and it’s the home country of Chevrolet, so we need to do our best.
"I can’t wait to get to Sonoma Raceway and try and secure Chevrolet a home victory.
"Like my team-mates, I have never raced in Sonoma but we have been working on data, simulations and footage. It looks like a great circuit and I look forward to being there."
Huff, who finished second to Frenchman Muller in last season's WTCC by just three points, revealed that he is now a married man.
"I have taken the opportunity of the long break to get married. Jazz (Jasmine) and I have been a couple for several years and we had planned this to happen sooner or later," he said.
"It is a big moment in a person’s life, so the focus for me in recent weeks has shifted to more personal matters. We’ll go on honeymoon in January after the championship is over.
"Now the priority is racing."
Manufacturer Chevrolet announced recently that it will leave the WTCC at the end of the season despite dominating the series since 2010.