The Texas senator’s decision to not endorse the GOP nominee is looking pretty good right now. WASHINGTON Immediately after Sen. Ted Cruz walked offstage at the GOP convention in Cleveland last month without endorsing Donald Trump, the Texas conservative and former presidential primary rival appeared to have made a grave miscalculation. (snip) But after a week of Trump repeatedly setting himself on fire (declining even to wait for the previous fire to go out), politicians who endorsed Trump, such as House Speaker Paul Ryan (R-Wis.), have found themselves feeling the heat, while Cruz’s decision is starting to look like the...