Is Tanzania slowing down economic integration in East Africa?

Despite the efforts to improve the "ease" of doing business within the East African Community, exporting goods to Tanzania is not getting any easier. There is a huge problem with non-tariff barriers:

[Tanzania] has added rather than subtracted checkpoints along the main export corridor within its territory; it charges imports of Kenyan plastics at up to 25 per cent tax, even though they are zero-rated under the treaty; it charges Ugandans $50 a visa, even though it should be free; and it has banned the sale herbal products at home unless they are Tanzanian. In a particularly astounding move, it won’t let cargo trucks from Burundi, Rwanda and Uganda move around the country, at all, after 6pm.

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