Trump to impose $100k fee for H-1B worker visas, White House says

It was a White House announcement of a White House policy relying (apparently) on nothing but executive authority. The attribution is correct.

Obviously there are very serious civic questions here (like under what law the authority to levy that fee was granted! Congress controls taxation, not the president). But so far congress and the courts are uninvolved.

The attribution is colloquial, but correct. It's routine to refer to the executive branch by the president's name.