Is TLR Trying to Weaken Border Security?

Texas Monthly magazine has called Texans for Lawsuit Reform (TLR) the "most powerful" conservative lobbying group in the state. If TLR is truly conservative, why has it given more than $750,000 to Texas Democrats who voted against strengthening border security? Why has it helped fund an elected official who openly sympathizes with illegal immigrants and one who admitted coming to America illegally as a child? Is it because one of TLR's biggest backers was the construction boss blamed for killing Texas Republicans' tough immigration bill?