Hunter Biden's allies have held initial discussions about creating a legal-defense fund to pay for a growing team of attorneys that is helping him confront both a years-long federal tax investigation and a host of new congressional inquiries, according to people familiar with the matter.

The effort has been triggered by Hunter Biden's struggles to pay his mounting legal bills amid increasingly stretched resources and his pursuit of a new, aggressive legal strategy, the people said, speaking on the condition of anonymity to discuss a sensitive subject.