Why does it say "v'Od Ra'isi"?
Rashbam: I saw further in this world, which is Hevel?
Seforno: In addition to nations pursuing Yisrael, even within Yisrael?
What is "Mekom ha'Mishpat"?
Rashi: It is Lishkas ha'Gazis in Yerushalayim, which is "Mele'asi Mishpat" (Yeshayah 1:21).
Ibn Ezra: It is a place proper for Mishpat.
Rashbam: It is where there are Tzadikim fixed to do Mishpat.
Metzudas David: A place to judge between litigants.
What evil did he see in Mekom ha'Mishpat?
Rashi: With Ru'ach ha'Kodesh, I saw that they judged evilly - "Rosheha b'Shochad Yishpotu" (Michah 3:11), and I saw their punishment.
Rashbam: Resha'im come to cut off the Tzadikim from their place, and the Resha'im sit in place of them.
Ri Kara: Where Anshei Mishpat and Anshei Tzedek used to sit, now Anshei Resha sit.
Rid: Sometimes the judges take bribes and obligate the innocent and vindicate the guilty. There is no greater evil than this!
Seforno: Litigants make false claims.
Metzudas David: It transformed to be a place where wayward people devise evil schemes.
What is the meaning of "u'Mekom ha'Tzedek Shamah ha'Rasha"?
Rashi: Sha'ar ha'Tavech, where they decide Halachos, there officers of Bavel judge Yisrael with afflictions and death sentences. There, is evil. Ha'Rasha is like ha'Resha; the Segol was changed to a Kamatz because it is Sof Pasuk, even though we do not find elsewhere that [Resha] changes due to Asnachta or Sof Pasuk.
Rashbam, Ri Kara, Rid: This is a repetition of "Mekom ha'Mishpat Shamah ha'Resha." Ibn Ezra - this is like "[Er'enu v'Lo Atah] Ashurenu v'Lo Karov", "Kum Balak u'Shama [Ha'azinah Adai Bno Tzipor]" (Bamidbar 24:17, 23:18), and most prophesies [have repetitions].
Seforno: Judges vindicate the guilty due to bribes.
Metzudas David: Where Anshei Tzedek sit, also the Rasha sits, and he entices them to follow his errant mindset.
