GBP/USD has lost its bullish momentum from the previous session, slipping below 1.2650 as the US dollar regains strength. A surge in US Treasury yields, coupled with the House of Representatives approving the Republican Budget Plan, has added downward pressure on the pair, preventing any significant breakout. For now, GBP/USD remains trapped in a sideways range between 1.261 and 1.268, awaiting fresh catalysts for direction.