What specifically have they done policy wise? I'm Canadian, don't have a stake in this.
1. The Infrastructure Investment Bill 2. The Inflation Reduction Act 3. The CHIPs Act
The name of 2 is a bit of a misnomer (extremely common in US politics to give bills misleading names to make then more popular).
Between them, he significantly increased government investment in domestic infrastructure, green energy, and the semiconductor industry.
Short term, that has probably been a big part of the magic formula that has kept unemployment low while interest rates have been high in order to combat inflation.