On May 15, 2020, in Cargo Systems Messaging Service (CSMS) #42718573, the US Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) announced the extension of the interim guidance allowing the electronic submissions of veterinary certifications, phytosanitary certificates, and PPQ 203 through July 18, 2020.
Instructions for electronic submission are included in the CSMS:
https://content.govdelivery.com/bulletins/gd/USDHSCBP-28bd56d?wgt_ref=USDHSCBP_WIDGET_2