At both the Chilkoot Pass and the White Pass, members of the North West Mounted Police (NWMP) were assigned to collect custom duties on the supplies brought into Canada.
These officers were also used to protect supplies.
As noted above, when stampeders traveled by the Chilkoot Pass, they had to leave some of their provisions at each end of the pass during the journey, as they could not manage transporting them all at once.
To protect the supplies, a large detachment of the North West Mounted Police was stationed there to ensure the proper wares went to the proper traveler.
The police also ensured that the rule of 1 ton of goods per person was enforced.

Tensions arose between the NWMP and the Americans related to disputes about where the international borders were located.
After several disputes between the governments, they decided to keep the international boundary at the Chilkoot and the White Passes.
The NWMP had already built custom houses at both passes prior to the dispute being settled.
Canada also used its militia, called the Yukon Field Force, to help the NWMP with guarding prisoners and protecting gold shipments.
The NWMP also regulated the whisky trade along the trails.

The police had wanted to build a port of entry at the summits of both the Chilkoot Pass and the White Pass.
This was to secure the border between Canada and the United States at these points.
The endeavor would cost a small fortune, as the wood had to be taken up the tramway, and they had to bribe any offended packers.
They wanted to avoid any delay in getting a cabin on the Chilkoot Pass summit.
But, the cabin was not constructed well and the high winds of the Chilkoot Pass drove snow into it.
As the snow melted, the interior became wet, creating mould; living conditions were so poor that blankets and bedding would not dry.
The collection of custom duties on the summit of Chilkoot Pass began on February 26, 1898.
At both the Chilkoot Pass and the White Pass, members of the North West Mounted Police (NWMP) were assigned to collect custom duties on the supplies brought into Canada. These officers were also used to protect supplies. As noted above, when stampeders traveled by the Chilkoot Pass, they had to leave some of their provisions at each end of the pass during the journey, as they could not manage transporting them all at once. To protect the supplies, a large detachment of the North West Mounted Police was stationed there to ensure the proper wares went to the proper traveler. The police also ensured that the rule of 1 ton of goods per person was enforced.
Tensions arose between the NWMP and the Americans related to disputes about where the international borders were located. After several disputes between the governments, they decided to keep the international boundary at the Chilkoot and the White Passes. The NWMP had already built custom houses at both passes prior to the dispute being settled. Canada also used its militia, called the Yukon Field Force, to help the NWMP with guarding prisoners and protecting gold shipments. The NWMP also regulated the whisky trade along the trails.
The police had wanted to build a port of entry at the summits of both the Chilkoot Pass and the White Pass. This was to secure the border between Canada and the United States at these points. The endeavor would cost a small fortune, as the wood had to be taken up the tramway, and they had to bribe any offended packers. They wanted to avoid any delay in getting a cabin on the Chilkoot Pass summit. But, the cabin was not constructed well and the high winds of the Chilkoot Pass drove snow into it. As the snow melted, the interior became wet, creating mould; living conditions were so poor that blankets and bedding would not dry. The collection of custom duties on the summit of Chilkoot Pass began on February 26, 1898.
Chilkoot Pass