This excerpt taken from the IMKTA 10-K filed Dec 8, 2005.
Section 10. Contractual Liability; Trust:
10.1 Contractual Liability. The obligation of the Employer to make payments hereunder shall constitute a contractual liability of the Employer to the Participant. Such payments shall be made from the general funds of the Employer, and the Employer shall not be required to establish or maintain any special or separate fund, or otherwise to segregate assets to assure that such payments shall be made, and the Participant shall not have any interest in any particular assets of the Employer by reason of its obligations hereunder. To the extent that any person acquires a right to receive payment from the Employer, such right shall be no greater than the right of an unsecured creditor of the Employer.
10.2 Trust. If so designated in the Adoption Agreement, the Employer may establish a Trust with the Trustee, pursuant to such terms and conditions as are set forth in the Trust Agreement. The Trust, if and when established, is intended to be treated as a grantor trust for purposes of the Code and all assets of the Trust shall be held in the United States. The establishment of the Trust is not intended to cause Participants to realize current income on amounts contributed thereto, and the Trust shall be so interpreted and administered.