Because you've investigated this for five years now and haven't found any evidence.
Except that was investigated by the Senate in 2020 and they found he wasn't.
The report delivered on Wednesday appeared to be little more than a rehashing of unproven allegations that echoed a Russian disinformation campaign.
www.nytimes.com
WASHINGTON — An election-year investigation by Senate Republicans into corruption allegations against Joseph R. Biden Jr. and his son, Hunter, involving Ukraine found no evidence of improper influence or wrongdoing by the former vice president, closing out an inquiry its leaders had hoped would tarnish the Democratic presidential nominee.
The investigation found that Hunter Biden had “cashed in” on his father’s name to close lucrative business deals around the world. It also concluded that his work for Burisma Holdings, a Ukrainian energy company then mired in a corruption scandal, while the former vice president was directing American policy toward Kyiv had given the appearance of a conflict of interest and alarmed some State Department officials.
But an 87-page report summing up the findings, released jointly on Wednesday by the Senate Homeland Security and Finance Committees, contained no evidence that the elder Mr. Biden improperly manipulated American policy toward Ukraine or committed any other misdeed. In fact, investigators heard witness testimony that rebutted those charges.
The problem with conspiracy theories is that no matter how many times you prove it was a weather balloon, some fucking moron will insist it was a flying saucer.