A 2015 SSRN study indicates that 92% of biracial children with African American fathers are born out of wedlock, and 82% of these children are on government assistance.
The study highlights issues with paternal involvement, economic standing, and family structure for these children.

https://www.researchgate.net/publication/315367933_Ninety_Two_Percent_Examining_the_Birth_Trends_Family_Structure_Economic_Standing_Paternal_Relationships_and_Emotional_Stability_of_Biracial_Children_with_African_American_Fathers