Captain Michael Bradley, who made $6.5 million (U.S.) last season as a designated player, agreed to re-sign for less.
That opened the door to acquiring Argentine attacker Pablo Piatti as one of their new big three.
They extended the deals of centre back Chris Mavinga, winger Auro Jr. and goalkeeper Quentin Westberg.
And they planned for the future by adding 2020 SuperDraft pick Ifunanyachi Achara, among other homegrown youngsters, to the roster.
The competition: The month-long tournament at ESPN’s Wide World of Sports Complex uses a World Cup-like format: six groups of four, with each team playing three group-stage matches over about two weeks.
