Washington (AFP) – US Federal Reserve Governor Christopher Waller signaled Thursday he may support a full percentage point interest rate hike this month — the biggest increase in more than 30 years and a further indication of the central bank’s determination to crush sky-high inflation. And although rising borrowing costs and blistering price surges have raised fears of recession, Waller said he believes the economy can avoid a downturn thanks to the strong US job market. The Fed in March began aggressively raising borrowing costs to try to cool demand amid the impact of the Ukraine war, whic…