YOU SAID:

This has been the toughest decision I had to make since became the president of the United States.

INTO JAPANESE

これは私がアメリカ大統領になってからの最も難しい決断でした。

BACK INTO ENGLISH

This was the hardest decision since I became the president of the United States.

INTO JAPANESE

私がアメリカ大統領になって以来、これは最も難しい決断でした。

BACK INTO ENGLISH

This has been the hardest decision since I became the president of the United States.

INTO JAPANESE

私がアメリカ大統領になって以来、これは最も難しい決断でした。

BACK INTO ENGLISH

This has been the hardest decision since I became the president of the United States.