The campaign of Democrat Ammar Campa-Najjar, who is running against incumbent Republican Rep Duncan Hunter Jr. (R-CA) in California's 50th congressional district, donated $650 to the Council on American-Islamic Relations (CAIR) in 2017, public records show.
As Breitbart News has noted:
In 2007-8, CAIR was named an unindicted co-conspirator in the terror financing trial of the Holy Land Foundation for Relief and Development. That case, in turn, led the FBI to discontinue its work with the organization. In 2009, a federal judge ruled that the government "produced ample evidence to establish" the ties of CAIR with Hamas, the Palestinian terror organization. The United Arab Emirates labeled CAIR a terrorist organization in 2014 (a decision that the Obama administration opposed).