What could the federal government do to end the rail labour dispute?

Prime Minister Justin Trudeau hinted Thursday that his government will soon unveil a plan to help bring an end to the ongoing railway shutdown — but his options may be limited.

What could the federal government do to end the rail labour dispute?
Teamsters union members picketing near a metal fence at the entrance of a lot with a sign that reads: CN provide property; no trespassing.

Prime Minister Justin Trudeau hinted Thursday that his government will soon unveil a plan to help bring an end to the ongoing railway shutdown — but his options may be limited.