CSX is a publicly-traded US company..it has no foreign ownership
FWIW, DP did buy the CSX terminal operations. Here
If the # 3 company is not good enough to do the job, who is? Consider the losing bidder on the transaction, PSA International. They are partially owned by Hutchinson-Wampoa. If there are security concerns with DP, there would also be security concerns with PSA/Hutchinson-Wampoa/ChiComs.
Strike them off the list too, who's next?