Business groups tell Obama that the use of a mediator is imperative in longshore union talks.
Employers "hopeful that this will allow us to move toward conclusion of an agreement in the near term."
No rapid conclusion is expected in labor contract talks that have been ongoing for six months.
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."