A Massachusetts man was charged Thursday with sending the threatening letter filled with white powder to Donald Trump Jr. that sent his wife to the hospital — along with four other letters mailed to a California prosecutor, a law professor, a senator and actor Antonio Sabato Jr. Daniel Frisiello, 24, was arrested after what prosecutors called "a textbook federal investigation" that traced the letters to him. Frisiello had a different complaint for each recipient, authorities said.
