Keep in mind that in both US and Canada there's a different (and lower) minimum wage for 'tipped workers'.
US Federal law states minimum wage is only $2.13/hr for someone that makes $30/month in tips (instead of normal minimum $7.25) [1]. If they don't make $30 in tips the employer must make up the difference.
At 30 hours/week (and 4.3 weeks/month), $30/month works out to $0.23/hr, so the effective minimum wage is still only $2.36/hr.
Some states are quite a bit higher (eg Hawaii is $7/hr), and in some (eg, Alaska, California) the minimum wage is the same regardless of tips.
[1]: https://en.wikipedia.org/wiki/Tipped_wage_in_the_United_Stat...