Embarrassing questions have also arisen between the two Governments in regard to Central America. Great Britain has proposed to settle them by an amicable arrangement, and our minister at London is instructed to enter into negotiations on that subject. A commission for adjusting the claims of our citizens against Great Britain and those of British subjects against the United States, organized under the convention of the 8th of February last, is now sitting in London for the transaction of business. It is in many respects desirable that the boundary line between the United States and the British Provinces in the northwest, as designated in the convention of the 15th of June, 1846, and especially that part which separates the Territory of Washington from the British possessions on the north, should be traced and marked. I therefore present the subject to your notice. With France our relations continue on the most friendly footing. The extensive commerce between the United States and that country might, it is conceived, be released from some unnecessary restrictions to the mutual advantage of both parties. With a view to this object, some progress has been made in negotiating a treaty of commerce and navigation. Independently of our valuable trade with Spain, we have important political relations with her growing out of our neighborhood to the islands of Cuba and Porto Rico. I am happy to announce that since the last Congress no attempts have been made by unauthorized expeditions within the United States against either of those colonies. Should any movement be manifested within our limits, all the means at my command will be vigorously exerted to repress it. Several annoying occurrences have taken place at Havana, or in the vicinity of the island of Cuba, between our citizens and the Spanish authorities. Considering the proximity of that island to our shores, lying, as it does, in the track of trade between some of our principal cities, and the suspicious vigilance with which foreign intercourse, particularly that with the United States, is there guarded, a repetition of such occurrences may well be apprehended.