Carol, a friend went across the strait to Port Angeles, in the US, last weekend and was worried about racial profiling, as he looks decidedly middle eastern. Fortunately he also has a MetÃs Card, so there was absolutely no problem on the US side.
However, when he was returning to Canada, the Canadian side swabed his steering wheel. He sat for a long time waiting for the results, sweating bullets, because we have been told here, that most larger denomination US currency has coke residue on it and he was sure with his luck, he might have inadvertently handled a contaminated bill.
The swab came back negative and he was free to proceed, but paranoia when crossing the border is common now regarding stuff other than national security too.