Check this post from rolygate, http://www.e-cigarette-forum.com/forum/advocates-updates-usa/567740-action-alert-omb-oira-today.html.
It seems you have to add to the omb-oira e-mail subject line and resubmit your email.
That's included in Julie/CASAA's CTA:
"The next step is to take a copy of your letter and copy it into an email to oira_submission@omb.eop.gov
The subject line of the email should be: FDA Proposed Regulations Deeming tobacco Products, Agency Docket No. FDA-2014-N-0189; RIN: 0910-AG38."
... and:
"Please ensure that the title of your letter from Part I remains in the body of your email:
Re: The Food and Drug Administration Deems tobacco Products To Be Subject to the Federal Food, Drug, and Cosmetic Act, as Amended by the Family Smoking Prevention and tobacco Control Act; Regulations Restricting the Sale and Distribution of Tobacco Products and Required Warnings for Tobacco Product Packages and Advertisements."