Throw me a bone here.
The underlying purported wrong happened in the early 2000s, the (first purported) perjury happened in 2004 and 2006 during Kav's confirmation hearings. Post 2004 and 2006, the Democrats had party control of the House and Senate several times. But they never ran an investigation into (then Judge) Kav and produced an official report on the matter. President Obama came into office in 2009 and the Democrats had several years to investigate and prosecute, but the DOJ did not do so.
More recently, Judge (now Justice) Kav has testified again on these matters. You don't point to any particular inconsistency between his old and new testimony. But you think it probable he lied and/or committed perjury.
Does not the absence of a timely investigation and timely prosecution by the party that had incentive to do so and the power to do so, indicate (perhaps strongly) that no cognizable wrong had taken place? Even with impeachment off-the-table as a practical matter, the Democrats could have investigated and produced a House or Senate report. The DOJ could also have prosecuted. If you maintain that a legal wrong has taken place--should not the fair-minded conclude that Justice Kav is now on the Supreme Court because the Democrats in Congress and President Obama's Justice Department were unwilling to do their jobs?
Are you aware of any other such egregious failures by Obama, Holder, et al? This is probably a good time to tell us all--before the next Article III appointment to the Supreme Court or otherwise.
Seth Barrett Tillman, My Post on CONLAWPROF on Kavanaugh and Perjury, New Reform Club (Oct. 8, 2018, 3:57 AM), https://reformclub.blogspot.com/2018/10/my-post-on-conlawprof-on-kavanaugh-and.html.