...such Indians, or to affect the authority of the Government of the United States to make any regulation respecting such Indians, their lands, property, or...law, or otherwise, which it would have been competent to the Government to make if this act had never passed : And provided further, That nothing in this...

...between the United States and such Indians, or to impair or anywise to affec^ the authority of the government of the United States to make any regulations...their lands, property, or other rights, by treaty, or law, or otherwise, which it would have been competent to the government to make, if this act had...