So as more information unfolds about who did what in the Ukraine scandal, President Donald Trump is beginning to do what he appears to do best — throw members of his inner circle under the bus.

Trump's personal lawyer Rudy Giuliani was spotted at a restaurant with two men who were arrested as they tried to leave the country. Turns out the men were involved in efforts to get dirt on Trump's main 2020 presidential rival, former Vice President Joe Biden. The president's alibi: He has no idea who the men are; but he seems certain that Giuliani does. Take a look at today's Best of Late Night, above, for comic James Corden's complex explanation that shows even when Trump is guilty he's somehow not guilty.

Meanwhile, comic Seth Meyers tells us why Giuliani and Energy Secretary Rick Perry (also named by Trump for involvement in Ukraine) are far from the perfect picks to carry off a campaign scheme.

After you watch our favorite jokes from last night's late-night lineup, vote for yours in the poll below.

Follow Eileen Rivers on Twitter @msdc14.