The phrase "admit that the existing" is correct and usable in written English.
It can be used when acknowledging or conceding the reality of a current situation or condition.
Example: "In our discussion, I must admit that the existing policies are not sufficient to address the current challenges we face."
Alternatives: "acknowledge that the current" or "concede that the present".
Lord Marland admitted that the existing Mox plant is not fit for purpose, which is why the Nuclear Decommissioning Authority has brought in the French nuclear company Areva, which wants to build the second Mox plant based on its own Mox operation at Marcoule in the south of France.
"Many people rely on this machine in the shop, because it's free". Link admits that the existing subsidy is inadequate.
Although the General Council admitted that the existing discrimination against homosexuals could not be condoned, it was quite critical about extending marriage toward same-sex couples (including collateral adoption).
Both presidential candidates seem to recognize this - Hillary Clinton has noted that American-led economic sanctions were not enough to stop North Korea's nuclear ambition, all but admitting that the existing policy is a failure.
We need to think and discuss what kind of university we want, what types of changes we can tolerate, and admit how the existing structures that serve us now may not be in the public good in the long run.
Pete Benton, deputy director of the census, was prepared to admit that the ONS would "take a very good look at the existing data the government already holds, and see whether we can use that to produce the required statistics".
But Republicans cannot admit that the only way to protect pre-existing conditions is to emulate Democratic policies.
/ Culturally appropriated by the white face / And we don't want to admit that this is existing / So scared to acknowledge the benefits of our white privilege," he spits.
He admits that the value of existing books and other properties derives from work efforts expended during the marriage, but says that the value of future books and other properties depends on his future efforts and those of others". Legal experts point out the case's myriad complexities.
