D. Amendments to Conditions of Carriage
1. Amendments By Delta
Delta may amend these Conditions of Carriage at any time, except as provided by law. Your travel will be governed by the rules that are in effect on the date your travel begins. In the event that we amend these Conditions of Carriage in a way that materially affects the terms
and conditions of your ticket purchase after you have purchased your ticket but before your travel begins, and you do not agree to be bound by the rules as amended, you may request a full refund of your ticket price.

RULE 80 REVISED ROUTINGS, FAILURE TO CARRY AND MISSED CONNECTIONS (continued)
C) INVOLUNTARY REVISED ROUTINGS (continued)
2) Change in Schedule- For the purpose of this rule, change in schedule means changes which
require rerouting of the passenger prior to departure time of the original flight which occurs more
than 24 hours prior to the original scheduled departure time. Change in schedule does not
include force majeure events as defined in paragraph (D) of this rule.
When a passenger will be delayed because of a change in its schedule, carrier will arrange to:
a) Transport the passenger over its' own lines to the destination, next stopover point or
transfer point shown on its portion of the ticket at no additional cost to the passenger.
b) Endorse the unused ticket for the purpose of rerouting over another carrier. < This is only done in extreme situations... this is what you are asking for though and it is within the rules given to you, however the Amendments to Conditions of Carriage pretty much say that delta has the right to alter these rules as long as they comply with DOT/FAA regulations/ federal laws and if you disagree you can get a refund. To deny you protection on another airline due to an advance schedule change is not against the law but the right of the airline and the contract you entered after you bought the ticket.
c) DL will reroute the passenger as provided above, but without stopover at any point on
the rerouted portion of the trip. If the passenger holds a tourist/coach ticket for travel
within the Continental U.S.A., passenger may be rerouted on DL's own next First Class
service on which space is available at no additional cost to the passenger, if so doing
will provide an earlier arrival than the next tourist/coach flight on which space is
available.
d)
i) Passengers holding other than first class tickets will not be involuntarily rerouted
on First Class services of other carriers without additional collection.
ii) Passengers will not be involuntarily rerouted on concorde aircraft without
additional collection.
e) Refund in accordance with the provisions of Rule 90(D)(REFUNDS).