Some of the president's advisers feared Hitler might declare war on the United states.
总统的几位顾问担心希特勒会向美国宣战。

2.seize power 夺取政权

The government would not allow anyone to sneak in by the back door and seize power by force
政府不会允许任何人偷偷混进来并用暴力攫取政权。