From 2014 to 2024, Canada’s real GDP per capita adjusted for purchasing power parity grew by just 3.2 percent in total, an anemic 0.4 percent per year on average, and the third lowest among 38 advanced nations. Over the same period, the United States posted 20.2 percent total growth (1.9 percent annually), and the OECD average reached 15.3 percent (1.4 percent annually). The measurement shortcomings cannot explain five-to six-fold differences in growth rates.

And:

The analysis estimates that a substantial share of Canadians who would rank among top earners in Canada have emigrated to the United States—roughly 40 percent of potential top 1 percent earners and 30 to 50 percent of the next nine percentiles. Canadian-born individuals in the United States are more educated than native-born Americans, earn substantially more, and cluster disproportionately in top income deciles.

Canada is effectively exporting its inequality to the U.S. The brain drain simultaneously lowers our average income while raising American income, accounting for a significant share of the persistent GDP gap.

Here is the full piece.