[5] In November 2011, he threatened a Supreme Court challenge to the constitutionality of Joint District Planning and Budget Priorities Committees, because he argued that they violated the separation of powers in rendering legislators also responsible for implementing projects.
[6] In December 2011, he criticised what he considered "political interference" in hiring processes which had resulted in the temporary closure of Kundiawa Hospital, and called for the reinstatement of "proper procedures".
[13] In August 2012, he stated that he believed the government's free education policy was "doomed to failure" as it could not be properly managed and was being implemented without addressing underlying structural issues.
[18] In January 2013, he criticised the government over the failed Eight Mile public service housing scheme outside Port Moresby and demanded answers as to where money had gone.
[19] He raised a number of concerns about perceived overspending on infrastructure projects in the National Capital District as opposed to the rest of the country.
[22][23] In June 2013, he criticised the government for failing to replace deceased Chief Ombudsman Chronox Manek while also leaving other positions in the corruption watchdog unfilled.
[24] Kulang strongly condemned proposed constitutional changes in 2013 that would require a three-month notice period and the signatures of a third of MPs for no-confidence motions and reduce the number of sitting days.
[25] He described the government's "continuous tampering with the constitution to entrench itself deeper in power" as "a very dangerous move indeed" that would make no-confidence motions virtually impossible.
[40] In April 2015, the Papua New Guinea Trade Union Congress referred Kulang and four other MPs to the Ombudsman Commission over a K693,041 trip to the United States to purchase a 404-year-old Bible.