Ramban: Bearing in mind that "Efes ki Lo Yih'yeh b'cha Evyon" ? in Pasuk 4 - refers to Eretz Yisrael exclusively, ¹ the Torah here is referring to wherever one lives, even in Chutz la'Aretz, as does "be'Artzecha" at the end of the Pasuk. ²

Refer to 15:4:1:1-4 and notes.

Shabbos, 151b: It implies that there will always be Aniyim, even in the times of Mashi'ach, in which case the only difference between nowadays and the time of Mashi'ach is our subordination to the nations of the world which will come to an end with the coming of Mashi'ach. ¹

Seforno: We find that it does in Ha'azinu, 3:29 "Ki Yada'ati Acharei Mosi ki Hashcheis Tishchisun!"

Rashbam: Based on the Pasuk in Koheles, 7:20 'For there is no such person who is righteous - who does only good and does not sin!' it is inevitable that they will.

Rashi: It means that Moshe is offering Yisrael a sound piece of advice. ¹

Ramban #1: Because the Mitzvah of Tzedakah only applies to giving to a fellow Yisrael, but not to a Nochri. ¹

Ramban #2 (citing the Sifri), Ibn Ezra and Targum Yonasan: In order to give precedence to one's relatives ² over strangers. ³

Targum Yonasan: In order to give precedence to the poor of one's own town over the poor of other towns.

Ibn Ezra: With reference to 15:11:4:2 ?"Evyonei Artzecha" comes to give precedence to the destitute of one?s own country before those of other countries.