From the Introduction: "Successive U.S. Administrations have viewed Morocco as an important regional partner on security, trade, and development. Historically warm ties expanded after the terrorist attacks of September 11, 2001, when President George W. Bush sought the cooperation of Arab governments in countering terrorism. His Administration designated Morocco a Major Non-NATO Ally in 2004 and concluded a bilateral Free Trade Agreement the same year, which Congress authorized under P.L. 108-302. The United States has continued to build strong relations with the kingdom under President Obama and President Trump, notwithstanding occasional friction over the issue of Western Sahara, a disputed territory that Morocco claims and largely administers. High-level meetings regularly occur, including via a U.S.-Morocco Bilateral Strategic Dialogue (see 'U.S. Relations')."
CRS Report for Congress, R45387
Congressional Research Service: https://crsreports.congress.gov/