The team will play South Korea on 1 June in Commerce City, Colorado, before a rematch on 4 June in St Paul, Minnesota.
Captain Lindsey Horan, among five players from European teams on the roster, will join training camp after her club, Lyon, face Barcelona for the Champions League title on Saturday.
A notable omission from the roster is veteran goalkeeper Alyssa Naeher, who was injured while playing in a match for the Chicago Red Stars on 12 May.
Jane Campbell (Houston Dash), Aubrey Kingsbury (Washington Spirit), Casey Murphy (North Carolina Courage).
Tierna Davidson (NJ/NY Gotham), Emily Fox (Arsenal), Naomi Girma (San Diego Wave), Casey Krueger (Washington Spirit), Jenna Nighswonger (NJ/NY Gotham), Emily Sonnett (NJ/NY Gotham), Sam Staab (Chicago Red Stars).
Korbin Albert (Paris Saint-Germain), Sam Coffey (Portland Thorns), Hal Hershfelt (Washington Spirit), Lindsey Horan (Lyon), Rose Lavelle (NJ/NY Gotham), Lily Yohannes (Ajax).
Crystal Dunn (NJ/NY Gotham), Catarina Macario (Chelsea), Alex Morgan (San Diego Wave), Trinity Rodman (Washington Spirit), Jaedyn Shaw (San Diego Wave), Sophia Smith (Portland Thorns), Mallory Swanson (Chicago Red Stars)
