admit to or admit -ing

[Srdjan]

In what cases the gerund/infinitive form should be used with the verb admit ?

She admitted (to make) /making a mistake.
The new law was generally admitted to be (being) difficult to enforce.

thanx in advance,

Srdjee

[Tdol]

I'd use:
She admitted making a mistake/to making a mistake.
I wouldn't use the infinitive after it.