Hunter Biden's ex-wife is called as a witness in his federal gun trial

WILMINGTON, Del. (AP) — Hunter Biden's ex-wife was called Wednesday to testify in his federal gun trial as prosecutors sought to show the depths of his drug problem, which they say was still going on when he filled out a form to buy a firearm.

Hunter Biden and Kathleen Buhle were married for roughly 20 years. They have three children and divorced in 2016 after his infidelity and drug abuse became too much, according to her memoir, "If We Break," about the dissolution of their marriage.

Buhle testified that she discovered her husband was using drugs when she found a crack pipe in an ashtray on their porch on July, 3, 2015, a day after their anniversary. When she confronted him, "he acknowledged smoking crack," she said.