The USD/CAD pair traded in a narrow range during Friday’s Asian session, hovering just below the 1.4000 psychological level. Despite the US dollar facing pressure from a pullback in Treasury yields, the widening interest rate differential between the Federal Reserve and the Bank of Canada continues to provide fundamental support for the pair, which is on track for a second consecutive weekly gain and an extended rally of more than a week.

The pair climbed to near 1.4000 this week, reaching its highest level since August 7th. The primary driver of Canadian dollar weakness lies in the further divergence of monetary policy paths between the US and Canada. The Bank of Canada held its policy rate steady at 2.25% this month, while the Fed raised its benchmark rate by 25 basis points to a 3.75%-4.00% range, re-widening the policy gap to 175 basis points. This expanded differential directly diminishes the appeal of Canadian assets relative to their US counterparts.

Market participants are not only assessing the impact of the Fed's latest hike but also repricing the future policy trajectory. Signals from the Fed suggest the possibility of further rate increases within the year, whereas the Bank of Canada must balance inflation, economic growth, and the external trade environment. Against this backdrop, short-term rate markets show significantly stronger support for the US dollar than the loonie.

Strategists at Scotiabank note that the policy spread has returned to 175 basis points, with the widening front-end yield gap being a key reason for the recent softness in the Canadian dollar. Their models suggest an equilibrium rate for USD/CAD around 1.3894, indicating that spot levels currently reflect a somewhat overvalued US dollar. However, with no clear catalyst to narrow the US-Canada rate differential in the near term, a sustained rebound in the loonie appears unlikely for now.

Oil prices, traditionally a significant support for the Canadian dollar, have not fully played that role recently. As a major energy exporter, higher international crude prices typically improve Canada's terms of trade and boost the currency's appeal. Yet, despite oil remaining elevated, increased focus on global supply and demand prospects, coupled with trade concerns between the US and Canada, has prevented the loonie from fully benefiting from higher energy prices.

Trade jitters are another crucial factor pressuring the Canadian dollar. The US previously imposed a 50% tariff on approximately $20 billion worth of Canadian goods, prompting Canada to retaliate with tariffs ranging from 15% to 50% on about $20 billion of US products. The ongoing friction adds to the uncertainty facing the Canadian economy, potentially weighing on growth through exports, business investment, and consumer confidence channels.

For the Bank of Canada, a deteriorating external trade environment means policymakers must pay closer attention to downside risks to growth. Should trade disputes further undermine Canadian economic activity, markets might raise expectations for future rate cuts or a prolonged period of low rates, thereby amplifying the interest rate advantage of the US dollar over the loonie. However, current inflation readings and energy prices remain important variables that could restrain a rapid shift in policy expectations.

On the other hand, the US dollar is not entirely in a position of strength. The 10-year Treasury yield retreated from its previous session highs, and lower oil prices have eased some inflationary pressures, allowing the dollar index to consolidate at higher levels near the 100 mark. Fed Chair Warsh emphasized that inflation remains elevated, which tempered the recent bond market sell-off, but the pullback in yields still limits the greenback's upside potential in the short term.

Consequently, USD/CAD is exhibiting a clear fundamental divergence. The widening rate gap, trade tensions, and Canadian growth risks support the pair, while falling US yields and elevated oil prices provide some buffer for the loonie, simultaneously slowing the pair's ascent. The next phase for markets will involve closely monitoring economic data from both countries and any further guidance on policy paths from their central banks.

Should US inflation and employment data maintain their resilience, expectations for further Fed hikes could intensify, potentially keeping USD/CAD elevated. Conversely, if US economic indicators cool while oil prices remain robust, the Canadian dollar may find room for some recovery.

On the daily chart, USD/CAD maintains a bullish structure, rising for a second straight week and approaching the 1.4000 psychological barrier. Following breaks above the 1.3800 and 1.3900 zones, the short-term uptrend has been reinforced. The 1.4000 level represents the most significant psychological resistance; a decisive daily close above it could open the path toward 1.4050 and then 1.4100. On the downside, initial support lies near 1.3900, the first line of defense after the recent rally, followed by the 1.3850 and 1.3800 areas. A break below 1.3800 would signal a clear weakening of the uptrend and could lead to a return to the previous trading range.

On the 4-hour chart, the pair is consolidating at highs after a sharp rally, with repeated resistance around 1.4000 and signs of slowing bullish momentum. A sustained 4-hour close above 1.4000 could open the door for further gains, while repeated failures to break through and a drop below 1.3900 might trigger a technical correction, targeting the 1.3850 vicinity.

Overall, USD/CAD remains in a firm short-term structure, but the 1.4000 area is a crucial watershed for the next directional move. As long as the pair stays above 1.3800, the medium-term uptrend remains intact.

Summary: The Fed raising rates to 3.75%-4.00% while the Bank of Canada held at 2.25% re-widened the policy gap to 175 basis points, a key fundamental factor underpinning USD/CAD strength. Simultaneously, US-Canada trade friction adds extra pressure on the loonie, hindering its ability to benefit from high oil prices. However, falling US Treasury yields and somewhat cooler oil prices restrain the dollar's advance, suggesting that USD/CAD could face stiff resistance near 1.4000.

In the near term, 1.4000 is the core battleground for bulls and bears, with an effective breakout contingent on changes in the rate differential, US monetary policy expectations, and energy market dynamics. If US data continues to support further hikes, the rate gap may stay wide, extending the pair's upward structure. If US data cools, yields keep falling, and oil remains strong, the loonie could gradually recover, alleviating upward pressure on USD/CAD.