US President Donald Trump fired FBI Director James Comey as, according to the White House's explanation, he is not able to effectively lead the Bureau.The dismissal of James Comey raised concerns about the consequences of Trump's economic policy and his ability to find the public support. The US currency weakened in the Asian session amid this event. Meanwhile, the yen climbed as the demand for the safe-haven assets has increased. The USD/JPY pair traded lower by 0.28% at 113.68, while AUD/USD rose by 0.35% to 0.7368 on Wednesday. The AUD/USD pair was supported by the news published today at night that Australia unveiled a new budget which includes a rise in taxation for the country's five biggest banks. Local authorities have high expectations of this measure that it will help to achieve the goals of ensuring a budget surplus and a credit rating of AAA. USDX which reflects the strength of the US dollar against other major currencies fell by 0.18% to 99.27.