Should I contact the ACLU? If so what can
No. This is not something the ACLU would deal with. The deal with civil liberty matters, which primarly means violations of rights by the government. This is simply a probate matter. If the estate is large enough for federal estate tax or if the decedent had outstanding income tax issues, then the settlement of the estate may take awhile. Let me explain a few things about taxes and estates that may help you better understand the executor's situation.
Federal estate taxes have the highest claim on the estate other than funeral expenses and certain administrative expenses. Other federal taxes similarly have a very high priority, ahead of most other claims to the estate. The executor is resposible for ensuring that ALL the decedent's taxes are paid before distributing property to beneficiaries. If the executor makes a distribution to you and other heirs and then is unable to pay the taxes, the executor then becomes personally liable to the IRS at least to the extent of the amount that was distributed.
So, well advised executors take great care to make sure the taxes are paid. Before they make significant distributions, a careful executor will obtain a clearance letter from the IRS. This letter tells the executor that the IRS has examined its records for the decedent and the estate and that all taxes are filed and paid. This then frees the executor to make distributions without worry of liability to the U.S. If there are no problems, it takes approximately 6-9 months after the request is made to get the letter.
Before granting the request, however, the IRS may decide to audit either the estate tax return or one of the decedent's income tax returns. Indeed, for estates that are large enough that they may be subject to federal estate tax, the audit rate is very high. If the IRS selects one or more returns to audit, it can easily take a year or two to get that resolved; more if the issues are especially complex or if the matter goes to litigation.
I don't like Drew's suggestion that you write or call the attorney or executor every other day. That's a terrible idea, IMO. Being an attorney and having been an executor, I'll tell you what my reaction to that would be. You'd quickly become persona non grata as far as I was concerned; I'd completely ignore your communications and provide you only the bare minimum information that the probate law required. Thus, in my view that would be counterproductive for you.
If you've not made a request yet in writing, I suggest you write a polite letter to the executor requesting the status of the estate and when the executor thought distributions might be made. If the executor provides some information sufficient to explain what's going on, then that's great. If the executor doesn't answer or provides a meaningless response, then I think you want to see your lawyer about the possibility of filing an action to compel distribution or some other action with the probate court that will help nudge the executor along.