The subjunctive is required there in American English. Some Brits would also use it, but I think most would use the indicative.
I just found the following:
Practical English Usage 3rd.
567 subjunctive
Ordinary verbs only have one subjunctive form: a third person singular present with no
-(e)s (e.g.
she see). It is sometimes used in
that-clauses in a formal style, especially in American English, after words which express the idea that something is important or desirable (e.g.
suggest, recommend, ask, insist, vital, essential, important, advice). The same forms are used in both present and past sentences.
It is essential that every child have the same educational opportunities.
It was important that lames contact Arthur as soon as possible.
Our advice is that the company invest in new equipment.
The judge recommended that Simmons remain in prison for life.
Do is not used in negative subjunctives. Note the word order.
We felt it desirable that he not leave school before eighteen.
With verbs that are not third-person singular, the forms are the same as ordinary present-tense verbs (but they may refer to the past).
I recommended that you move to another office.
Most subjunctive structures are formal and unusual in British English. In that-clauses, British people usually prefer
should + infinitive (see 521), or ordinary present and past tenses.
It is essential that every child should have the same educational opportunities. (OR ... that every child has ... )
It was important that James should contact Arthur as soon as possible. (OR ... that James contacted ... )
