Q. U.S. national trade data and state export data?

WiserTrade, International trade database which includes 4 U.S. state level export series, U.S. exports and imports by customs district & by individual port, as well as EU, Brazil (by state and port), Canadian (by province and port), Chilean and Colombian (by region, port, and country of procurement), Chinese (by province through 2015), Mexican (by district), South African (district and port), Taiwanese (through 2012), and Japanese trade statistics. Also includes estimates of service trade by USA state by category since 2012.

TradeStats Express from the U.S. Office of Trade and Industry Information.