Jones act hurting Puerto Rico?

[leilanidude]

Sen. John McCain (R-Ariz.), a longtime advocate of repealing the Jones Act restrictions, wrote a letter to the Department of Homeland Security saying, "I am very concerned by the Department’s decision not to waive the Jones Act for current relief efforts in Puerto Rico, which is facing a worsening humanitarian crisis following Hurricane Maria."
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How do you stretch to Trump refused? Especially when he immediately signed the order after the governor requested it?