It is understood and agreed that the laws and regulations adopted, or that may be adopted, by the United States and by the Republic of Cuba, to protect their revenues and prevent fraud in the declarations and proofs that the articles of merchandise to which this convention may apply are the product or manufacture of the United States and the Republic of Cuba, respectively, shall not impose any additional charge or fees therefor on the articles imported, excepting the consular fees established, or which may be established, by either of the two countries for issuing shipping documents, which fees shall not be higher than those charged on the shipments of similar merchandise from any other nation whatsoever. ARTICLE VI It is agreed that the tobacco, in any form, of the United States or of any of its insular possessions, shall not enjoy the benefit of any concession or rebate of duty when imported into the Republic of Cuba. ARTICLE VII It is agreed that similar articles of both countries shall receive equal treatment on their importation into the ports of the United States and of the Republic of Cuba, respectively. ARTICLE VIII The rates of duty herein granted by the United States to the Republic of Cuba are and shall continue during the term of this convention preferential in respect to all like imports from other countries, and, in return for said preferential rates of duty granted to the Republic of Cuba by the United States, it is agreed that the concession herein granted on the part of the said Republic of Cuba to the products of the United States shall likewise be, and shall continue, during the term of this convention, preferential in respect to all like imports from other countries. Provided, That while this convention is in force, no sugar imported from the Republic of Cuba, and being the product of the soil or industry of the Republic of Cuba, shall be admitted into the United States at a reduction of duty greater than twenty per centum of the rates of duty thereon as provided by the tariff act of the United States approved July 24, 1897, and no sugar, the product of any other foreign country, shall be admitted by treaty or convention into the United States, while this convention is in force, at a lower rate of duty than that provided by the tariff act of the United States approved July 24, 1897. ARTICLE IX In order to maintain the mutual advantages granted in the present convention by the United States to the Republic of Cuba and by the Republic of Cuba to the United States, it is understood and agreed that any tax or charge that may be imposed by the national or local authorities of either of the two countries upon the articles of merchandise embraced in the provisions of this convention, subsequent to importation and prior to their entering into consumption in the respective countries, shall be imposed and collected without discrimination upon like articles whencesoever imported. ARTICLE X