This is Ask An Expert, where every weekday at 9:20 am, KCBS Radio is giving you direct access to top experts in various fields.

Today: Democrats and Republicans are responding to last night's presidential debate between Joe Biden and Donald Trump.

While Trump's claims on the economy, environment, and border went unchecked, Biden's mannerisms and low energy were also the subject of much criticism.

For a closer look, KCBS Radio news anchors Margie Shafer and Eric Thomas spoke with KCBS Insider Phil Matier and former San Francisco mayor Willie Brown.

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