Washington (AFP) – Armed with a new interest rate strategy, the Federal Reserve will seek to reassure the US economy rattled by the coronavirus downturn as it wraps up its policy meeting on Wednesday.The two-day event concludes amid a renewed push by a top lawmaker in Washington to agree on an additional spending bill to prop up the economy following a historic collapse in GDP in the second quarter and data showing a worryingly high rate of new layoffs.The United States is home to the world’s worst coronavirus outbreak with more than 194,000 deaths, and in the pandemic’s opening days the Fed s…