 The government also prepared a three-part law plan called the "Stop Soros package" (which followed other various law changes in the same year, hindering the workings of several international NGOs in Hungary), which would include various steps against NGOs doing volunteer work related to the refugee crisis.In March 2017, six US senators sent a letter to then Secretary of State Rex Tillerson asking that he look into several grants the State Department and the US Agency for International Development (USAID) have given to groups funded by "left-wing" Soros.According to the Heritage Foundation, the letter expressed specific concern about Soros' influence on Macedonian politics, a concern which has also been expressed by members of the conservative Macedonian government.