Watch live: White House press briefing

White House press secretary Jen PsakiJen PsakiSchumer requests Senate briefing on Ukraine amid Russia tensions Biden rushes to pressure Russia as Ukraine fears intensify Pelosi requests all-member briefing on Ukraine MORE and John D. Porcari, port envoy to the Biden administration Supply Chain Disruptions Task Force, will hold a press briefing Wednesday afternoon. 

The event is scheduled to begin at 12:00 p.m. ET. 

Watch the live video above. 

--Updated at 11:41 a.m.