In the document, the railroad said it has the most environmentally friendly and youngest array of locomotives in the United States.
FMC Commissioner Khouri said the agency is making sure ocean carriers properly implement any surcharges for cargo at West Coast ports.
Pacific Maritime Association says slowdown is crippling ports of Tacoma and Seattle.
Port of Long Beach CEO said ports are in a "perfect position" to play this role.
Flexi-Van executive says "misplaced" chassis have aggravated congestion.
ICTSI Oregon says actions against it are "far beyond what other West Coast ports are experiencing."