I have added Japanese (Anthy) as an input source, but when I type with it selected, the characters that appear are hiragana which correspond to Japanese keyboard (not US keyboard). For instance, when I hit the a key, I expect to get あ, but instead I get ち, because on a Japanese keyboard, the a key is also the ち key.
However, I have selected us keyboard in my IBus-Anthy settings. (See screenshot.) What do I need to change?

