First he caved on HR8, voting with the democrats to require background checks on anyone wishing to exercise their 2nd Amendment rights, which many say is a backdoor gun registry or could very well lead to one.

BizPac review writes:

Congressman Brian Mast is a war hero, conservative, and all-American family man, voting with President Trump 100 percent of the time in the 116th Congress. So it comes as a complete and total surprise that he recently appeared publicly with a group that has repeatedly sued the Trump Administration and has taken at least $17,500 from a George Soro-linked organization. The group in question is the Center for Biological Diversity, a far left environmental group supported by the George Soros-backed and San Francisco-based Tides Foundation. Soros’ support for the Tides Foundation has been widely reported.

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Recently, Congressman Mast appeared at an event in his congressional district to promote public awareness of environmental issues in Florida. The meeting was organized by far-left environmental groups Bullsugar and the Center for Biological Diversity.

The Center for Biological Diversity has proudly sued the Trump Administration 106 times. According to a large banner on the front of the left-leaning group’s website, the group is “nowhere near finished” filing lawsuits against President Trump.

In fact, on the day that Mast appeared with the group, the group announced it was filing suit against President Trump’s administration Emergency Declaration to build the new border wall. In announcing the lawsuit, the Center for Biological Diversity’s senior attorney called President Trump’s declaration “a flagrant abuse of that constitutional structure…If [Trump] gets his way, it’ll be a disaster for communities and wildlife along the border, including some of our country’s most endangered species.”