The 28-year-old, world champion in 2013 and twice a world cup series winner, is named pending a recovery from hand and wrist injuries sustained in February.
Senior academy rider Paddy Sharrock is set to make his elite level debut.
In the junior women's event, Beth Shriever heads to Rock Hill with five wins in the junior women's class of the UEC BMX European Cup so far this year.
Kyle Evans, who won the seventh round of the UEC BMX European Cup in Verona over the weekend, has also been selected.
Olympic podium coach Grant White is confident Phillips will overcome injury sufficiently and said: "Having worked with Liam for nine years and helped him develop into one of the world's best, I am confident in his ability to perform at this event despite setbacks and the team at British Cycling are doing all they can to aid his recovery."
Elite Men: Kyle Evans, Liam Phillips Paddy Sharrock
Junior Women: Beth Shriever, Blaine Ridge-Davis
Junior Men: Kye Whyte
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Liam Phillips has been included in the Great Britain squad for the UCI BMX World Championships in South Carolina.