The letters from Biden's lawyers asking investigators for probes into Rudy Giuliani and others is a dramatic shift in strategy for the president's son.

President Biden has said the classified documents was locked up in his garage along with his treasured Corvette.

The federal investigation into Hunter Biden's business activities is nearing a critical juncture as investigators weigh possible charges and prosecutors confront Justice Department guidelines to generally avoid bringing politically sensitive cases close to an election, according to people briefed on the matter.