How long?
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Fencing is a bit of a one-way ratchet.
https://www.whitehousehistory.org/press-room/press-timelines/history-of-the-white-house-fence
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May 20 1995, President Bill Clinton closed Pennsylvania Avenue in front of the White House to all vehicular traffic, a security response to the Oklahoma City bombing.
That remains a mess, forever.
I want to be able to walk up to the Capitol and take a self-guided walking tour with nobody saying anything to me and no security checkpoints to walk through.
And on a Saturday morning I want to park right at the foot of the Capitol steps, without passing through any kind of security checkpoint.
That is how it was for most of the times I went there.