to a country if, not later than 90 days after the submission to Congress of the annual report on trafficking in persons that lists the country as a tier 3 country, the President submits to the appropriate congressional committees a letter stating that the government of the country has taken concrete actions to implement the principal recommendations with respect to that country in the report. (ii) Requirements A letter submitted under clause (i) with respect to a country shall— (I) include a description of the concrete actions that the government of the country has taken to implement the principal recommendations described in that clause