From Yahoo News:
Pfizer to Restrict Drug Sales to U.S. from Canada
Pfizer Inc., the world's biggest drugmaker, said on Wednesday it will cut off supplies of its products to any Canadian pharmacy that sells drugs at a discount to consumers in the United States.

The New York company, following a trend begun by GlaxoSmithKline Plc, told pharmacists in a letter dated Aug. 4 that it will sell all drugs produced by Pfizer and its recently acquired subsidiary, Pharmacia, directly rather than through wholesalers and distributors.

From Bloomberg:
Pfizer Cuts Drug Channel to 50 Canadian Pharmacies
Pfizer Inc., the world's largest drugmaker, cut off supplies through wholesalers to 50 Canadian pharmacies that sell its medicines to U.S. consumers for less than the company charges in its home market.

New York-based Pfizer told the companies in letters that they must purchase top-selling medicines such as the Viagra impotence pill directly from the drugmaker. The stores were buying from wholesalers and shipping some orders to the U.S.

From the (Toronto) Globe and Mail:
Pfizer targets drug sales to U.S., report says
A report says drug giant Pfizer Inc. will control its supplies to Canadian pharmacies in an effort to control sales of the cheaper drugs to the United States.

Reuters says the company wrote to pharmacists, saying the company will bypass wholesalers and distributers when it sells treatments.

From News 12 Westchester, CT:
Lawmakers join prescription drug fight
Two local lawmakers are looking to help bring the cost of prescription drugs down by proposing federal legislation that would allow medication to be brought into the U.S. from Canada.

Senator Charles Schumer (D-NY) and Congresswoman Nita Lowey (D-Harrison) announced their plan Wednesday at the White Plains Senior Center.