I can not dismiss the subject of Indian affairs without again recommending to your consideration the expediency of more adequate provision for giving energy to the laws throughout our interior frontier and for restraining the commission of outrages upon the Indians, without which all pacific plans must prove nugatory.
The word "necessary" is considered as controlling the whole sentence, and as limiting the right to pass laws for the execution of the granted powers to such as are indispensable, and without which the power would be nugatory.
puhekieltä Removable from a computer program with safety, but harmless if retained.