YOU SAID:

the constitution of this country forbids me to do that

INTO JAPANESE

この国の憲法は私にそれをすることを禁じている

BACK INTO ENGLISH

The constitution of this country prohibits me from doing it.

INTO JAPANESE

この国の憲法は私がそれを行うことを禁じている。

BACK INTO ENGLISH

The constitution of this country prohibits me from doing it.